fix delete booking

storage/mongodb.go

@@ -225,12 +225,9 @@ func (s MongoDBStorage) GetBookingsForDriver(driver string) (bookings []Booking,
 func (s MongoDBStorage) DeleteBooking(bookingid string) error {
 	collection := s.Client.Database(s.DbName).Collection(s.Collections["bookings"])
 
-	_, err := collection.UpdateOne(
+	_, err := collection.DeleteOne(
 		context.TODO(),
 		bson.M{"_id": bookingid},
-		bson.D{
-			{"$set", bson.D{{"deleted", true}}},
-		},
 	)
 
 	return err