small refactor of sonarqube issue

Backend/endpoints/time.go

@@ -261,22 +261,3 @@ func updateAbsence(r *http.Request) error {
 	return nil
 
 }
-
-func createAbsence(absenceType int, user models.User, loc *time.Location, r *http.Request) {
-	absenceDate, err := time.ParseInLocation("2006-01-02", r.FormValue("date"), loc)
-	if err != nil {
-		log.Println("Cannot get date from input! Skipping absence creation", err)
-		return
-	}
-
-	absence, err := models.NewAbsence(user.CardUID, absenceType, absenceDate)
-	if err != nil {
-		log.Println("Error creating absence!", err)
-		return
-	}
-	err = absence.Insert()
-	if err != nil {
-		log.Println("Error inserting absence!", err)
-		return
-	}
-}