DEV: Remove deprecated 'desc' parameter from group members endpoint (#22147)

app/controllers/groups_controller.rb

@@ -242,14 +242,6 @@ class GroupsController < ApplicationController
     raise Discourse::InvalidParameters.new(:offset) if offset < 0
 
     dir = (params[:asc] && params[:asc].present?) ? "ASC" : "DESC"
-    if params[:desc]
-      Discourse.deprecate(
-        ":desc is deprecated please use :asc instead",
-        output_in_test: true,
-        drop_from: "2.9.0",
-      )
-      dir = (params[:desc] && params[:desc].present?) ? "DESC" : "ASC"
-    end
     order = "NOT group_users.owner"
 
     if params[:requesters]