Add delete query

pkg/database/timetable.go

@@ -27,3 +27,9 @@ type Service struct {
 	DaysRun           []string  `json:"daysRun,omitempty"`
 	Stops             []Stop    `json:"stops,omitempty"`
 }
+
+type DeleteQuery struct {
+	TrainUid          string `json:"trainUid"`
+	ScheduleStartDate string `json:"scheduleStartDate"`
+	StpIndicator      string `json:"stpIndicator"`
+}