refactor(aria/toolbar): consolidate imports in dev-app

Updates toolbar-demo.ts to consolidate the imports from
components-examples for toolbar.

Author: essjay05

src/dev-app/aria-toolbar/toolbar-demo.ts

@@ -7,8 +7,10 @@
  */
 
 import {ChangeDetectionStrategy, Component, ViewEncapsulation} from '@angular/core';
-import {ToolbarBasicHorizontalExample} from '@angular/components-examples/aria/toolbar';
-import {ToolbarConfigurableExample} from '@angular/components-examples/aria/toolbar';
+import {
+  ToolbarBasicHorizontalExample,
+  ToolbarConfigurableExample,
+} from '@angular/components-examples/aria/toolbar';
 
 @Component({
   templateUrl: 'toolbar-demo.html',