CREATE TABLE table_21273 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT)

What was the manner of departure for Edgar Schmitt of the Stuttgarter Kickers?
SELECT "Manner of departure" FROM table_21273 WHERE "Team" = 'Stuttgarter Kickers' AND "Outgoing manager" = 'Edgar Schmitt'
SELECT "Manner of departure" FROM "table_21273" WHERE "Outgoing manager" = 'Edgar Schmitt' AND "Team" = 'Stuttgarter Kickers'