Remove custom statistics.php front controller

Statistics is approved for removal. See 🌱 [Policy] Deprecate Statistics module in D10 and move to contrib in D11 Fixed

This is now Postponed. The status is set according to two policies. The Remove a core extension and move it to a contributed project → and the Extensions approved for removal → policies.

It will be moved to a contributed Statistics project once the project is created and the Drupal 11 branch is open.