Remove retries, since Windows flaky tests are fixed

Author: richardkmichael

tests/extension.spec.js

@@ -245,10 +245,7 @@ test.describe('', () => {
   });
 
   // Bookmark button navigation tests - ensure button appears regardless of navigation path
-  // NOTE: These tests can be flaky due to GitHub's variable page load times and React hydration.
-  // Retries are enabled to mitigate transient failures.
   test.describe('Navigation', { tag: '@navigation' }, () => {
-    test.describe.configure({ retries: 2 });
 
     const bookmarkSelector = '[data-extension-bookmark]';
     // Selector for GitHub's header actions (where bookmark button is inserted)