Display of "installed successfully" message on module install

There's really no reason to display the following message when you install CCK Phone:

Phone number module installed successfully.

Drupal will already report the success, and this causes problems when using CCK Phone in an install profile. Can you imagine if all ~100 modules in an install profile display a 'success' message on install? It would completely obliterate the post-install page. :)

Patch to follow.