Revert "[MM-8497] Ability to set Do Not Disturb for a specified period of time (#16067)" (#17657)

This reverts commit 77d42568f9.

plugin/api_timer_layer_generated.go

@@ -266,13 +266,6 @@ func (api *apiTimerLayer) UpdateUserStatus(userID, status string) (*model.Status
 	return _returnsA, _returnsB
 }
 
-func (api *apiTimerLayer) SetUserStatusTimedDND(userId string, endtime int64) (*model.Status, *model.AppError) {
-	startTime := timePkg.Now()
-	_returnsA, _returnsB := api.apiImpl.SetUserStatusTimedDND(userId, endtime)
-	api.recordTime(startTime, "SetUserStatusTimedDND", _returnsB == nil)
-	return _returnsA, _returnsB
-}
-
 func (api *apiTimerLayer) UpdateUserActive(userID string, active bool) *model.AppError {
 	startTime := timePkg.Now()
 	_returnsA := api.apiImpl.UpdateUserActive(userID, active)