Revert "[build] Deps tracking for mono/utils/Makefile.am when extension module is disabled."

This reverts commit a2e939a8a37e1baa3c7c3c4f54871cb6839aa6c3.

Revert this as is not needed.
Revert "[build] Include mono/utils into the extensions module."

This reverts commit b7604565016ea1d0883765dcd7a44ba9662a1521.

Revert this as it is not needed.