Revert "stop the flake?"

This reverts commit 7337349.

Author: jackbayliss

.github/workflows/tests.yml

@@ -38,9 +38,6 @@ jobs:
     - name: Install PHP dependencies
       run: composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --no-progress --ansi
 
-    - name: Dump optimized autoloader
-      run: composer dump-autoload --optimize --ansi
-
     - name: Install dependencies
       run: npm ci