[MM-34838] Remove Ancillary Permissions That Are Purposefully Being Removed (#17466)

* remove ancillary permissions

* Start writing tests

* Move Ancillary Permissions to FrontEnd

* remove function

* remove test

* clean up

* fix comment

* Update api4/permission.go

Co-authored-by: Martin Kraft <martinkraft@gmail.com>

* Update api4/permission.go

* Update api4/permission.go

* license info

* Add Tests

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Martin Kraft <martinkraft@gmail.com>

api4/api.go

@@ -131,6 +131,8 @@ type Routes struct {
 
 	RemoteCluster  *mux.Router // 'api/v4/remotecluster'
 	SharedChannels *mux.Router // 'api/v4/sharedchannels'
+
+	Permissions *mux.Router // 'api/v4/permissions'
 }
 
 type API struct {
@@ -250,6 +252,8 @@ func Init(configservice configservice.ConfigService, globalOptionsFunc app.AppOp
 	api.BaseRoutes.RemoteCluster = api.BaseRoutes.ApiRoot.PathPrefix("/remotecluster").Subrouter()
 	api.BaseRoutes.SharedChannels = api.BaseRoutes.ApiRoot.PathPrefix("/sharedchannels").Subrouter()
 
+	api.BaseRoutes.Permissions = api.BaseRoutes.ApiRoot.PathPrefix("/permissions").Subrouter()
+
 	api.InitUser()
 	api.InitBot()
 	api.InitTeam()
@@ -289,6 +293,7 @@ func Init(configservice configservice.ConfigService, globalOptionsFunc app.AppOp
 	api.InitImport()
 	api.InitRemoteCluster()
 	api.InitSharedChannels()
+	api.InitPermissions()
 	api.InitExport()
 
 	root.Handle("/api/v4/{anything:.*}", http.HandlerFunc(api.Handle404))