Simplify structure by having less files (#86)

pkg/models/user_delete.go

@@ -1,39 +0,0 @@
-//  Vikunja is a todo-list application to facilitate your life.
-//  Copyright 2018 Vikunja and contributors. All rights reserved.
-//
-//  This program is free software: you can redistribute it and/or modify
-//  it under the terms of the GNU General Public License as published by
-//  the Free Software Foundation, either version 3 of the License, or
-//  (at your option) any later version.
-//
-//  This program is distributed in the hope that it will be useful,
-//  but WITHOUT ANY WARRANTY; without even the implied warranty of
-//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//  GNU General Public License for more details.
-//
-//  You should have received a copy of the GNU General Public License
-//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-package models
-
-import "code.vikunja.io/api/pkg/metrics"
-
-// DeleteUserByID deletes a user by its ID
-func DeleteUserByID(id int64, doer *User) error {
-	// Check if the id is 0
-	if id == 0 {
-		return ErrIDCannotBeZero{}
-	}
-
-	// Delete the user
-	_, err := x.Id(id).Delete(&User{})
-
-	if err != nil {
-		return err
-	}
-
-	// Update the metrics
-	metrics.UpdateCount(-1, metrics.ActiveUsersKey)
-
-	return err
-}