Revert "[MM-41576] Revamp database schema version (#19586)" (#19746)

* Revert "[MM-41576] Revamp database schema version (#19586)"

This reverts commit 645fee3fe3.

* Revert "MM-42049 - license endpoint not working (#19686)"

This reverts commit 4fe89e5847.

testlib/store.go

@@ -110,7 +110,5 @@ func GetMockStoreForSetupFunctions() *mocks.Store {
 	mockStore.On("Session").Return(&sessionStore)
 	mockStore.On("OAuth").Return(&oAuthStore)
 	mockStore.On("Group").Return(&groupStore)
-	mockStore.On("GetDBSchemaVersion").Return(1, nil)
-
 	return &mockStore
 }