We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Drop the `bug` model
The model has been renamed to `defect` in https://github.com/mozilla/bugbug/pull/335/files#diff-74f32ab12cc9be314b1fead3a281590c768699c2e9883b8346066f6c4d6daa90 

However, the definition of `bug` model was not dropped.


We need to drop the following line: https://github.com/mozilla/bugbug/blob/c228c2a686b271f7ca24a0716cda4f9059229d9f/bugbug/models/__init__.py#L16


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `bugbug/models/__init__.py`
Content:
```
1 # -*- coding: utf-8 -*-
2 import importlib
3 import logging
4 from typing import Type
5 
6 from bugbug.model import Model
7 
8 LOGGER = logging.getLogger()
9 
10 
11 MODELS = {
12     "annotateignore": "bugbug.models.annotate_ignore.AnnotateIgnoreModel",
13     "assignee": "bugbug.models.assignee.AssigneeModel",
14     "backout": "bugbug.models.backout.BackoutModel",
15     "browsername": "bugbug.models.browsername.BrowserNameModel",
16     "bug": "bugbug.model.BugModel",
17     "bugtype": "bugbug.models.bugtype.BugTypeModel",
18     "component": "bugbug.models.component.ComponentModel",
19     "component_nn": "bugbug.models.component_nn.ComponentNNModel",
20     "defect": "bugbug.models.defect.DefectModel",
21     "defectenhancementtask": "bugbug.models.defect_enhancement_task.DefectEnhancementTaskModel",
22     "devdocneeded": "bugbug.models.devdocneeded.DevDocNeededModel",
23     "duplicate": "bugbug.models.duplicate.DuplicateModel",
24     "fixtime": "bugbug.models.fixtime.FixTimeModel",
25     "needsdiagnosis": "bugbug.models.needsdiagnosis.NeedsDiagnosisModel",
26     "qaneeded": "bugbug.models.qaneeded.QANeededModel",
27     "rcatype": "bugbug.models.rcatype.RCATypeModel",
28     "regression": "bugbug.models.regression.RegressionModel",
29     "regressionrange": "bugbug.models.regressionrange.RegressionRangeModel",
30     "regressor": "bugbug.models.regressor.RegressorModel",
31     "spambug": "bugbug.models.spambug.SpamBugModel",
32     "stepstoreproduce": "bugbug.models.stepstoreproduce.StepsToReproduceModel",
33     "testlabelselect": "bugbug.models.testselect.TestLabelSelectModel",
34     "testgroupselect": "bugbug.models.testselect.TestGroupSelectModel",
35     "testconfiggroupselect": "bugbug.models.testselect.TestConfigGroupSelectModel",
36     "testfailure": "bugbug.models.testfailure.TestFailureModel",
37     "tracking": "bugbug.models.tracking.TrackingModel",
38     "uplift": "bugbug.models.uplift.UpliftModel",
39 }
40 
41 
42 def get_model_class(model_name: str) -> Type[Model]:
43     if model_name not in MODELS:
44         err_msg = f"Invalid name {model_name}, not in {list(MODELS.keys())}"
45         raise ValueError(err_msg)
46 
47     full_qualified_class_name = MODELS[model_name]
48     module_name, class_name = full_qualified_class_name.rsplit(".", 1)
49 
50     module = importlib.import_module(module_name)
51 
52     return getattr(module, class_name)
53
```
--- 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/bugbug/models/__init__.py b/bugbug/models/__init__.py
--- a/bugbug/models/__init__.py
+++ b/bugbug/models/__init__.py
@@ -13,7 +13,6 @@
     "assignee": "bugbug.models.assignee.AssigneeModel",
     "backout": "bugbug.models.backout.BackoutModel",
     "browsername": "bugbug.models.browsername.BrowserNameModel",
-    "bug": "bugbug.model.BugModel",
     "bugtype": "bugbug.models.bugtype.BugTypeModel",
     "component": "bugbug.models.component.ComponentModel",
     "component_nn": "bugbug.models.component_nn.ComponentNNModel",

{"golden_diff": "diff --git a/bugbug/models/__init__.py b/bugbug/models/__init__.py\n--- a/bugbug/models/__init__.py\n+++ b/bugbug/models/__init__.py\n@@ -13,7 +13,6 @@\n     \"assignee\": \"bugbug.models.assignee.AssigneeModel\",\n     \"backout\": \"bugbug.models.backout.BackoutModel\",\n     \"browsername\": \"bugbug.models.browsername.BrowserNameModel\",\n-    \"bug\": \"bugbug.model.BugModel\",\n     \"bugtype\": \"bugbug.models.bugtype.BugTypeModel\",\n     \"component\": \"bugbug.models.component.ComponentModel\",\n     \"component_nn\": \"bugbug.models.component_nn.ComponentNNModel\",\n", "issue": "Drop the `bug` model\nThe model has been renamed to `defect` in https://github.com/mozilla/bugbug/pull/335/files#diff-74f32ab12cc9be314b1fead3a281590c768699c2e9883b8346066f6c4d6daa90 \r\n\r\nHowever, the definition of `bug` model was not dropped.\r\n\r\n\r\nWe need to drop the following line: https://github.com/mozilla/bugbug/blob/c228c2a686b271f7ca24a0716cda4f9059229d9f/bugbug/models/__init__.py#L16\r\n\n", "before_files": [{"content": "# -*- coding: utf-8 -*-\nimport importlib\nimport logging\nfrom typing import Type\n\nfrom bugbug.model import Model\n\nLOGGER = logging.getLogger()\n\n\nMODELS = {\n    \"annotateignore\": \"bugbug.models.annotate_ignore.AnnotateIgnoreModel\",\n    \"assignee\": \"bugbug.models.assignee.AssigneeModel\",\n    \"backout\": \"bugbug.models.backout.BackoutModel\",\n    \"browsername\": \"bugbug.models.browsername.BrowserNameModel\",\n    \"bug\": \"bugbug.model.BugModel\",\n    \"bugtype\": \"bugbug.models.bugtype.BugTypeModel\",\n    \"component\": \"bugbug.models.component.ComponentModel\",\n    \"component_nn\": \"bugbug.models.component_nn.ComponentNNModel\",\n    \"defect\": \"bugbug.models.defect.DefectModel\",\n    \"defectenhancementtask\": \"bugbug.models.defect_enhancement_task.DefectEnhancementTaskModel\",\n    \"devdocneeded\": \"bugbug.models.devdocneeded.DevDocNeededModel\",\n    \"duplicate\": \"bugbug.models.duplicate.DuplicateModel\",\n    \"fixtime\": \"bugbug.models.fixtime.FixTimeModel\",\n    \"needsdiagnosis\": \"bugbug.models.needsdiagnosis.NeedsDiagnosisModel\",\n    \"qaneeded\": \"bugbug.models.qaneeded.QANeededModel\",\n    \"rcatype\": \"bugbug.models.rcatype.RCATypeModel\",\n    \"regression\": \"bugbug.models.regression.RegressionModel\",\n    \"regressionrange\": \"bugbug.models.regressionrange.RegressionRangeModel\",\n    \"regressor\": \"bugbug.models.regressor.RegressorModel\",\n    \"spambug\": \"bugbug.models.spambug.SpamBugModel\",\n    \"stepstoreproduce\": \"bugbug.models.stepstoreproduce.StepsToReproduceModel\",\n    \"testlabelselect\": \"bugbug.models.testselect.TestLabelSelectModel\",\n    \"testgroupselect\": \"bugbug.models.testselect.TestGroupSelectModel\",\n    \"testconfiggroupselect\": \"bugbug.models.testselect.TestConfigGroupSelectModel\",\n    \"testfailure\": \"bugbug.models.testfailure.TestFailureModel\",\n    \"tracking\": \"bugbug.models.tracking.TrackingModel\",\n    \"uplift\": \"bugbug.models.uplift.UpliftModel\",\n}\n\n\ndef get_model_class(model_name: str) -> Type[Model]:\n    if model_name not in MODELS:\n        err_msg = f\"Invalid name {model_name}, not in {list(MODELS.keys())}\"\n        raise ValueError(err_msg)\n\n    full_qualified_class_name = MODELS[model_name]\n    module_name, class_name = full_qualified_class_name.rsplit(\".\", 1)\n\n    module = importlib.import_module(module_name)\n\n    return getattr(module, class_name)\n", "path": "bugbug/models/__init__.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\nimport importlib\nimport logging\nfrom typing import Type\n\nfrom bugbug.model import Model\n\nLOGGER = logging.getLogger()\n\n\nMODELS = {\n    \"annotateignore\": \"bugbug.models.annotate_ignore.AnnotateIgnoreModel\",\n    \"assignee\": \"bugbug.models.assignee.AssigneeModel\",\n    \"backout\": \"bugbug.models.backout.BackoutModel\",\n    \"browsername\": \"bugbug.models.browsername.BrowserNameModel\",\n    \"bugtype\": \"bugbug.models.bugtype.BugTypeModel\",\n    \"component\": \"bugbug.models.component.ComponentModel\",\n    \"component_nn\": \"bugbug.models.component_nn.ComponentNNModel\",\n    \"defect\": \"bugbug.models.defect.DefectModel\",\n    \"defectenhancementtask\": \"bugbug.models.defect_enhancement_task.DefectEnhancementTaskModel\",\n    \"devdocneeded\": \"bugbug.models.devdocneeded.DevDocNeededModel\",\n    \"duplicate\": \"bugbug.models.duplicate.DuplicateModel\",\n    \"fixtime\": \"bugbug.models.fixtime.FixTimeModel\",\n    \"needsdiagnosis\": \"bugbug.models.needsdiagnosis.NeedsDiagnosisModel\",\n    \"qaneeded\": \"bugbug.models.qaneeded.QANeededModel\",\n    \"rcatype\": \"bugbug.models.rcatype.RCATypeModel\",\n    \"regression\": \"bugbug.models.regression.RegressionModel\",\n    \"regressionrange\": \"bugbug.models.regressionrange.RegressionRangeModel\",\n    \"regressor\": \"bugbug.models.regressor.RegressorModel\",\n    \"spambug\": \"bugbug.models.spambug.SpamBugModel\",\n    \"stepstoreproduce\": \"bugbug.models.stepstoreproduce.StepsToReproduceModel\",\n    \"testlabelselect\": \"bugbug.models.testselect.TestLabelSelectModel\",\n    \"testgroupselect\": \"bugbug.models.testselect.TestGroupSelectModel\",\n    \"testconfiggroupselect\": \"bugbug.models.testselect.TestConfigGroupSelectModel\",\n    \"testfailure\": \"bugbug.models.testfailure.TestFailureModel\",\n    \"tracking\": \"bugbug.models.tracking.TrackingModel\",\n    \"uplift\": \"bugbug.models.uplift.UpliftModel\",\n}\n\n\ndef get_model_class(model_name: str) -> Type[Model]:\n    if model_name not in MODELS:\n        err_msg = f\"Invalid name {model_name}, not in {list(MODELS.keys())}\"\n        raise ValueError(err_msg)\n\n    full_qualified_class_name = MODELS[model_name]\n    module_name, class_name = full_qualified_class_name.rsplit(\".\", 1)\n\n    module = importlib.import_module(module_name)\n\n    return getattr(module, class_name)\n", "path": "bugbug/models/__init__.py"}]}