remove cvs from list because it is not implemented yet

Dependencies

• [2] IK53RV4V
• [3] JLDUSNUO * Unify rendering of finished and scheduled builds.
• [4] JTRG7RDQ add support for git as jobinput

Change contents

• edit in src/root/common.tt at line 8
  [2.2856]→[2.2856:2885](∅→∅)
  − , "cvs" = "CVS checkout"