linkifier settings: Remove loading indicator.

There is no element on the settings page with
id="admin_page_filters_loading_indicator", so
the indicator doesn't appear. And even if we make
a div for an indicator, it would be hardly visible,
because we don't call the server to fetch linkifiers
in this page, and there generally won't be too many
linkifiers to render.

static/js/settings_linkifiers.js

@@ -4,7 +4,6 @@ import render_admin_linkifier_list from "../templates/admin_linkifier_list.hbs";
 
 import * as channel from "./channel";
 import * as ListWidget from "./list_widget";
-import * as loading from "./loading";
 import * as ui from "./ui";
 import * as ui_report from "./ui_report";
 
@@ -76,8 +75,6 @@ export function populate_linkifiers(linkifiers_data) {
         },
         simplebar_container: $("#linkifier-settings .progressive-table-wrapper"),
     });
-
-    loading.destroy_indicator($("#admin_page_filters_loading_indicator"));
 }
 
 export function set_up() {
@@ -88,9 +85,6 @@ export function set_up() {
 export function build_page() {
     meta.loaded = true;
 
-    // create loading indicators
-    loading.make_indicator($("#admin_page_filters_loading_indicator"));
-
     // Populate linkifiers table
     populate_linkifiers(page_params.realm_filters);