remove unneeded cvs script for updating PRs based on CVS commit logs

3 jobs for gnats in 15 minutes and 13 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #1633
build-sbbs

00:13:09

passed #1634
build-sexpots

00:00:13

passed #1635
build-syncterm

00:01:49