PluginsList: Remove unused panel options (#24501)

* Remove unused panel options

* satisfy ts

public/app/plugins/panel/pluginlist/editor.html

-<div class="gf-form-group">
-	<div class="gf-form-inline">
-		<div class="gf-form">
-			<span class="gf-form-label width-10">Mode</span>
-			<div class="gf-form-select-wrapper max-width-10">
-				<select class="gf-form-input" ng-model="ctrl.panel.mode" ng-options="f for f in ctrl.modes" ng-change="ctrl.refresh()"></select>
-			</div>
-		</div>
-		<div class="gf-form" ng-show="ctrl.panel.mode === 'recently viewed'">
-			<span class="gf-form-label">
-				<icon class="grafana-tip ng-scope" name="'question-circle'" bs-tooltip="'WARNING: This list will be cleared when clearing browser cache'" data-original-title="" title=""></icon>
-			</span>
-		</div>
-	</div>
-
-	<div class="gf-form-inline" ng-if="ctrl.panel.mode === 'search'"></div>
-		<div class="gf-form">
-			<span class="gf-form-label width-10">Search options</span>
-			<span class="gf-form-label">Query</span>
-
-			<input type="text" class="gf-form-input" placeholder="title query"
-				ng-model="ctrl.panel.query" ng-change="ctrl.refresh()" ng-model-onblur>
-
-		</div>
-
-		<div class="gf-form">
-			<span class="gf-form-label">Tags</span>
-
-			<bootstrap-tagsinput ng-model="ctrl.panel.tags" tagclass="label label-tag" placeholder="add tags" on-tags-updated="ctrl.refresh()">
-			</bootstrap-tagsinput>
-		</div>
-	</div>
-
-	<div class="gf-form-inline">
-		<div class="gf-form">
-			<span class="gf-form-label width-10">Limit number to</span>
-			<input class="gf-form-input" type="number" ng-model="ctrl.panel.limit" ng-model-onblur ng-change="ctrl.refresh()">
-		</div>
-	</div>
-</div>

public/app/plugins/panel/pluginlist/module.ts

 import _ from 'lodash';
 import { PanelCtrl } from '../../../features/panel/panel_ctrl';
 import { auto, IScope } from 'angular';
-import { PanelEvents } from '@grafana/data';
 import { ContextSrv } from '../../../core/services/context_srv';
 import { CoreEvents } from 'app/types';
 import { getBackendSrv } from '@grafana/runtime';
@@ -25,7 +24,6 @@ class PluginListCtrl extends PanelCtrl {
     _.defaults(this.panel, this.panelDefaults);
 
     this.isAdmin = contextSrv.hasRole('Admin');
-    this.events.on(PanelEvents.editModeInitialized, this.onInitEditMode.bind(this));
     this.pluginList = [];
     this.viewModel = [
       { header: 'Installed Apps', list: [], type: 'app' },
@@ -36,10 +34,6 @@ class PluginListCtrl extends PanelCtrl {
     this.update();
   }
 
-  onInitEditMode() {
-    this.addEditorTab('Options', 'public/app/plugins/panel/pluginlist/editor.html');
-  }
-
   gotoPlugin(plugin: { id: any }, evt: any) {
     if (evt) {
       evt.stopPropagation();