Revert "Reapply "fix: Add examples directory to Jest roots when running example tests""

This reverts commit f35f3ec.

Author: celicoo

jest.config.js

@@ -16,10 +16,6 @@ const customJestConfig = {
     '<rootDir>/../packages/next-codemod/',
     '<rootDir>/../packages/eslint-plugin-internal/',
     '<rootDir>/../packages/font/src/',
-    // Include examples directory when running example tests
-    ...(process.env.NEXT_TEST_MODE === 'start'
-      ? ['<rootDir>/../examples/']
-      : []),
   ],
   modulePathIgnorePatterns: ['/\\.next/'],
   modulePaths: ['<rootDir>/lib'],