[MM-53702] Remove Downgrade Team Selection modal and all accompanying logic (#24059)

* Remove Downgrade Team Selection modal and all accompanying logic

* fix linter

* Fix i18n

* Final pipeline fixes

server/channels/api4/team.go

@@ -42,7 +42,6 @@ func (api *API) InitTeam() {
 	api.BaseRoutes.Team.Handle("", api.APISessionRequired(getTeam)).Methods("GET")
 	api.BaseRoutes.Team.Handle("", api.APISessionRequired(updateTeam)).Methods("PUT")
 	api.BaseRoutes.Team.Handle("", api.APISessionRequired(deleteTeam)).Methods("DELETE")
-	api.BaseRoutes.Team.Handle("/except", api.APISessionRequired(softDeleteTeamsExcept)).Methods("DELETE")
 	api.BaseRoutes.Team.Handle("/patch", api.APISessionRequired(patchTeam)).Methods("PUT")
 	api.BaseRoutes.Team.Handle("/restore", api.APISessionRequired(restoreTeam)).Methods("POST")
 	api.BaseRoutes.Team.Handle("/privacy", api.APISessionRequired(updateTeamPrivacy)).Methods("PUT")
@@ -464,25 +463,6 @@ func deleteTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 	ReturnStatusOK(w)
 }
 
-func softDeleteTeamsExcept(c *Context, w http.ResponseWriter, r *http.Request) {
-	c.RequireTeamId()
-	if c.Err != nil {
-		return
-	}
-
-	if !c.App.SessionHasPermissionToTeam(*c.AppContext.Session(), c.Params.TeamId, model.PermissionManageTeam) {
-		c.SetPermissionError(model.PermissionManageTeam)
-		return
-	}
-
-	err := c.App.SoftDeleteAllTeamsExcept(c.Params.TeamId)
-	if err != nil {
-		c.Err = err
-	}
-
-	ReturnStatusOK(w)
-}
-
 func getTeamsForUser(c *Context, w http.ResponseWriter, r *http.Request) {
 	c.RequireUserId()
 	if c.Err != nil {