refactor(user): remove the now-empty listeners file

The user package no longer registers any event listeners, so drop the
empty RegisterListeners hook and its caller.

pkg/initialize/init.go

@@ -145,7 +145,6 @@ func FullInit() {
 	// Start processing events
 	go func() {
 		models.RegisterListeners()
-		user.RegisterListeners()
 		migrationHandler.RegisterListeners()
 		ws.RegisterListeners()
 		err := events.InitEvents()

pkg/user/listeners.go

@@ -1,22 +0,0 @@
-// Vikunja is a to-do list application to facilitate your life.
-// Copyright 2018-present 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 Affero 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 Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-package user
-
-// RegisterListeners registers all event listeners for the user package.
-// The user count metric is now counted on demand (see pkg/metrics), so there are
-// currently no listeners to register. This hook is kept for future user events.
-func RegisterListeners() {}

pkg/yaegi_symbols/vikunja_user.go

@@ -99,7 +99,6 @@ func init() {
 		"ListAllUsers":                         reflect.ValueOf(user.ListAllUsers),
 		"ListUsers":                            reflect.ValueOf(user.ListUsers),
 		"RegisterDeletionNotificationCron":     reflect.ValueOf(user.RegisterDeletionNotificationCron),
-		"RegisterListeners":                    reflect.ValueOf(user.RegisterListeners),
 		"RegisterTokenCleanupCron":             reflect.ValueOf(user.RegisterTokenCleanupCron),
 		"RequestDeletion":                      reflect.ValueOf(user.RequestDeletion),
 		"RequestUserPasswordResetToken":        reflect.ValueOf(user.RequestUserPasswordResetToken),