We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Check if ThreadLocalRuntimeContext can be removed since python3.4 support is dropped
https://github.com/open-telemetry/opentelemetry-python/blob/master/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py#L21

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `opentelemetry-api/src/opentelemetry/context/threadlocal_context.py`
Content:
```
1 # Copyright The OpenTelemetry Authors
2 #
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 #
7 #     http://www.apache.org/licenses/LICENSE-2.0
8 #
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14 
15 import threading
16 
17 from opentelemetry.context.context import Context, RuntimeContext
18 
19 
20 class ThreadLocalRuntimeContext(RuntimeContext):
21     """An implementation of the RuntimeContext interface
22     which uses thread-local storage under the hood. This
23     implementation is available for usage with Python 3.4.
24     """
25 
26     class Token:
27         def __init__(self, context: Context) -> None:
28             self._context = context
29 
30     _CONTEXT_KEY = "current_context"
31 
32     def __init__(self) -> None:
33         self._current_context = threading.local()
34 
35     def attach(self, context: Context) -> object:
36         """See `opentelemetry.context.RuntimeContext.attach`."""
37         current = self.get_current()
38         setattr(self._current_context, self._CONTEXT_KEY, context)
39         return self.Token(current)
40 
41     def get_current(self) -> Context:
42         """See `opentelemetry.context.RuntimeContext.get_current`."""
43         if not hasattr(self._current_context, self._CONTEXT_KEY):
44             setattr(
45                 self._current_context, self._CONTEXT_KEY, Context(),
46             )
47         context = getattr(
48             self._current_context, self._CONTEXT_KEY
49         )  # type: Context
50         return context
51 
52     def detach(self, token: object) -> None:
53         """See `opentelemetry.context.RuntimeContext.detach`."""
54         if not isinstance(token, self.Token):
55             raise ValueError("invalid token")
56         # pylint: disable=protected-access
57         setattr(self._current_context, self._CONTEXT_KEY, token._context)
58 
59 
60 __all__ = ["ThreadLocalRuntimeContext"]
61
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py b/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py
deleted file mode 100644
--- a/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py
+++ /dev/null
@@ -1,60 +0,0 @@
-# Copyright The OpenTelemetry Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import threading
-
-from opentelemetry.context.context import Context, RuntimeContext
-
-
-class ThreadLocalRuntimeContext(RuntimeContext):
-    """An implementation of the RuntimeContext interface
-    which uses thread-local storage under the hood. This
-    implementation is available for usage with Python 3.4.
-    """
-
-    class Token:
-        def __init__(self, context: Context) -> None:
-            self._context = context
-
-    _CONTEXT_KEY = "current_context"
-
-    def __init__(self) -> None:
-        self._current_context = threading.local()
-
-    def attach(self, context: Context) -> object:
-        """See `opentelemetry.context.RuntimeContext.attach`."""
-        current = self.get_current()
-        setattr(self._current_context, self._CONTEXT_KEY, context)
-        return self.Token(current)
-
-    def get_current(self) -> Context:
-        """See `opentelemetry.context.RuntimeContext.get_current`."""
-        if not hasattr(self._current_context, self._CONTEXT_KEY):
-            setattr(
-                self._current_context, self._CONTEXT_KEY, Context(),
-            )
-        context = getattr(
-            self._current_context, self._CONTEXT_KEY
-        )  # type: Context
-        return context
-
-    def detach(self, token: object) -> None:
-        """See `opentelemetry.context.RuntimeContext.detach`."""
-        if not isinstance(token, self.Token):
-            raise ValueError("invalid token")
-        # pylint: disable=protected-access
-        setattr(self._current_context, self._CONTEXT_KEY, token._context)
-
-
-__all__ = ["ThreadLocalRuntimeContext"]

{"golden_diff": "diff --git a/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py b/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py\ndeleted file mode 100644\n--- a/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py\n+++ /dev/null\n@@ -1,60 +0,0 @@\n-# Copyright The OpenTelemetry Authors\n-#\n-# Licensed under the Apache License, Version 2.0 (the \"License\");\n-# you may not use this file except in compliance with the License.\n-# You may obtain a copy of the License at\n-#\n-#     http://www.apache.org/licenses/LICENSE-2.0\n-#\n-# Unless required by applicable law or agreed to in writing, software\n-# distributed under the License is distributed on an \"AS IS\" BASIS,\n-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n-# See the License for the specific language governing permissions and\n-# limitations under the License.\n-\n-import threading\n-\n-from opentelemetry.context.context import Context, RuntimeContext\n-\n-\n-class ThreadLocalRuntimeContext(RuntimeContext):\n-    \"\"\"An implementation of the RuntimeContext interface\n-    which uses thread-local storage under the hood. This\n-    implementation is available for usage with Python 3.4.\n-    \"\"\"\n-\n-    class Token:\n-        def __init__(self, context: Context) -> None:\n-            self._context = context\n-\n-    _CONTEXT_KEY = \"current_context\"\n-\n-    def __init__(self) -> None:\n-        self._current_context = threading.local()\n-\n-    def attach(self, context: Context) -> object:\n-        \"\"\"See `opentelemetry.context.RuntimeContext.attach`.\"\"\"\n-        current = self.get_current()\n-        setattr(self._current_context, self._CONTEXT_KEY, context)\n-        return self.Token(current)\n-\n-    def get_current(self) -> Context:\n-        \"\"\"See `opentelemetry.context.RuntimeContext.get_current`.\"\"\"\n-        if not hasattr(self._current_context, self._CONTEXT_KEY):\n-            setattr(\n-                self._current_context, self._CONTEXT_KEY, Context(),\n-            )\n-        context = getattr(\n-            self._current_context, self._CONTEXT_KEY\n-        )  # type: Context\n-        return context\n-\n-    def detach(self, token: object) -> None:\n-        \"\"\"See `opentelemetry.context.RuntimeContext.detach`.\"\"\"\n-        if not isinstance(token, self.Token):\n-            raise ValueError(\"invalid token\")\n-        # pylint: disable=protected-access\n-        setattr(self._current_context, self._CONTEXT_KEY, token._context)\n-\n-\n-__all__ = [\"ThreadLocalRuntimeContext\"]\n", "issue": "Check if ThreadLocalRuntimeContext can be removed since python3.4 support is dropped\nhttps://github.com/open-telemetry/opentelemetry-python/blob/master/opentelemetry-api/src/opentelemetry/context/threadlocal_context.py#L21\n", "before_files": [{"content": "# Copyright The OpenTelemetry Authors\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#     http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport threading\n\nfrom opentelemetry.context.context import Context, RuntimeContext\n\n\nclass ThreadLocalRuntimeContext(RuntimeContext):\n    \"\"\"An implementation of the RuntimeContext interface\n    which uses thread-local storage under the hood. This\n    implementation is available for usage with Python 3.4.\n    \"\"\"\n\n    class Token:\n        def __init__(self, context: Context) -> None:\n            self._context = context\n\n    _CONTEXT_KEY = \"current_context\"\n\n    def __init__(self) -> None:\n        self._current_context = threading.local()\n\n    def attach(self, context: Context) -> object:\n        \"\"\"See `opentelemetry.context.RuntimeContext.attach`.\"\"\"\n        current = self.get_current()\n        setattr(self._current_context, self._CONTEXT_KEY, context)\n        return self.Token(current)\n\n    def get_current(self) -> Context:\n        \"\"\"See `opentelemetry.context.RuntimeContext.get_current`.\"\"\"\n        if not hasattr(self._current_context, self._CONTEXT_KEY):\n            setattr(\n                self._current_context, self._CONTEXT_KEY, Context(),\n            )\n        context = getattr(\n            self._current_context, self._CONTEXT_KEY\n        )  # type: Context\n        return context\n\n    def detach(self, token: object) -> None:\n        \"\"\"See `opentelemetry.context.RuntimeContext.detach`.\"\"\"\n        if not isinstance(token, self.Token):\n            raise ValueError(\"invalid token\")\n        # pylint: disable=protected-access\n        setattr(self._current_context, self._CONTEXT_KEY, token._context)\n\n\n__all__ = [\"ThreadLocalRuntimeContext\"]\n", "path": "opentelemetry-api/src/opentelemetry/context/threadlocal_context.py"}], "after_files": [{"content": null, "path": "opentelemetry-api/src/opentelemetry/context/threadlocal_context.py"}]}