Removed app check changes

Author: maneesht

packages/app-check/src/client.ts

@@ -25,7 +25,6 @@ import { FirebaseApp } from '@firebase/app';
 import { ERROR_FACTORY, AppCheckError } from './errors';
 import { Provider } from '@firebase/component';
 import { AppCheckTokenInternal } from './types';
-import { isCloudWorkstation } from '@firebase/util';
 
 /**
  * Response JSON returned from AppCheck server endpoint.
@@ -63,9 +62,6 @@ export async function exchangeToken(
     body: JSON.stringify(body),
     headers
   };
-  if (isCloudWorkstation(url)) {
-    options.credentials = 'include';
-  }
   let response;
   try {
     response = await fetch(url, options);