Fix racy test issues (#24971)

server/channels/app/helper_test.go

@@ -99,7 +99,6 @@ func setupTestHelper(dbStore store.Store, enterprise bool, includeCacheLayer boo
 		IncludeCacheLayer: includeCacheLayer,
 		ConfigStore:       configStore,
 	}
-	th.Context.SetLogger(testLogger)
 
 	th.App.UpdateConfig(func(cfg *model.Config) { *cfg.TeamSettings.MaxUsersPerTeam = 50 })
 	th.App.UpdateConfig(func(cfg *model.Config) { *cfg.RateLimitSettings.Enable = false })