[cleanup] Remove unnecessary typecasting

This types are now properly inferred by TypeScript.

Bug: none
Change-Id: Ic7ccd8221b2eb70d5a23d7cdd6e1b1f393ace8b7
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6765131
Commit-Queue: Nikolay Vitkov <[email protected]>
Auto-Submit: Nikolay Vitkov <[email protected]>
Reviewed-by: Jack Franklin <[email protected]>
Commit-Queue: Jack Franklin <[email protected]>

Author: Lightning00Blade

test/e2e/helpers/application-helpers.ts

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import type * as puppeteer from 'puppeteer-core';
-
 import type {DevToolsPage} from '../../e2e_non_hosted/shared/frontend-helper.js';
 import {
   $$,
@@ -241,7 +239,7 @@ export async function getStorageItemsData(
 }
 
 export async function filterStorageItems(filter: string, devToolsPage = getBrowserAndPagesWrappers().devToolsPage) {
-  const element = await devToolsPage.$('.toolbar-input-prompt') as puppeteer.ElementHandle;
+  const element = await devToolsPage.$('.toolbar-input-prompt');
   await expectVeEvents(
       [veImpressionsUnder('Panel: resources > Pane: cookies-data > Toolbar', [veImpression('TextField', 'filter')])],
       undefined, devToolsPage);

test/e2e_non_hosted/performance/timeline/treeview_test.ts

@@ -109,7 +109,7 @@ describe('The Performance tool, Bottom-up panel', function() {
     await navigateToBottomUpTab(devToolsPage, 'url');
 
     // use group-by drop down and validate activities
-    const timelineTree = await devToolsPage.$('.timeline-tree-view') as puppeteer.ElementHandle;
+    const timelineTree = await devToolsPage.$('.timeline-tree-view');
     await devToolsPage.waitForElementWithTextContent('h2_with_suffix', timelineTree);
     const dropdown = await devToolsPage.waitFor('select[aria-label="No grouping"]');
     await dropdown.evaluate(el => {