fix: closing some issues from sonarqube

Backend/endpoints/time.go

@@ -257,12 +257,6 @@ func updateAbsence(r *http.Request) error {
 		log.Println("Cannot get Absence for id: ", absenceId, err)
 		return err
 	}
-	if r.FormValue("action") == "delete" {
-		log.Println("Deleting Absence!", "Not implemented")
-		// TODO
-		//absence.Delete()
-		return nil
-	}
 
 	if absence.Update(newAbsence) {
 		err = absence.Save()
@@ -272,5 +266,4 @@ func updateAbsence(r *http.Request) error {
 		}
 	}
 	return nil
-
 }