user_groups: Remove Add all users button from group creation screen.

Partially fixes #33127.

web/src/user_group_create_members.ts

@@ -38,11 +38,6 @@ function add_members(user_ids: number[], subgroup_ids: number[]): void {
     redraw_member_list();
 }
 
-function add_all_users(): void {
-    const user_ids = user_group_create_members_data.get_all_user_ids();
-    add_members(user_ids, []);
-}
-
 function soft_remove_user_id(user_id: number): void {
     user_group_create_members_data.soft_remove_user_id(user_id);
     redraw_member_list();
@@ -91,12 +86,6 @@ function build_pill_widget({$parent_container}: {$parent_container: JQuery}): vo
 }
 
 export function create_handlers($container: JQuery): void {
-    $container.on("click", ".add_all_users_to_user_group", (e) => {
-        e.preventDefault();
-        add_all_users();
-        $(".add-user-list-filter").trigger("focus");
-    });
-
     $container.on("click", ".remove_potential_subscriber", function (this: HTMLElement, e) {
         e.preventDefault();
         const $subscriber_row = $(this).closest(".settings-subscriber-row");

web/styles/subscriptions.css

@@ -968,10 +968,6 @@ h4.user_group_setting_subsection_title {
             }
         }
 
-        .add_all_users_to_user_group {
-            margin-left: 10px;
-        }
-
         .create_user_group_member_list_header,
         .create_stream_subscriber_list_header {
             margin-top: 10px;

web/templates/user_group_settings/new_user_group_users.hbs

@@ -3,14 +3,6 @@
 </div>
 <br />
 
-{{t "Do you want to add everyone?"}}
-{{> ../components/action_button
-  label=(t "Add all users")
-  custom_classes="add_all_users_to_user_group inline-block"
-  attention="quiet"
-  intent="brand"
-  }}
-
 <div class="create_member_list_header">
     <h4 class="user_group_setting_subsection_title">{{t 'Members preview' }}</h4>
     <input class="add-user-list-filter filter_text_input" name="user_list_filter" type="text"