Remove the cvsmigration module from the drupal.org source tree

I attempted to run all of Project module's automated tests, but the first one fails because of:

An error occurred. /batch?id=4332&op=do <br /> <b>Fatal error</b>: Call to undefined function cvsmigration_make_anonymized_address() in <b>/var/www/dev/metrics-drupal.redesign.devdrupal.org/htdocs/sites/all/modules/cvsmigration/cvsmigration.test</b> on line <b>29</b><br />

This is because the module isn't enabled. Since this was only needed temporarily during the Git migration, I think this could be removed entirely now, and would prevent this from hitting another contributor down the road.