Remove Scheduler master branch

Thanks Liam Morland, I'll read through those notes and get it fixed.

The master branch was on the 7.x clone.

git branch -D master

Deleted branch master (was 39e76bd)

git push origin :master

remote: The branch master is tied to a development release on Drupal.org, and cannot be deleted.
remote: error: hook declined to update refs/heads/master
To git.drupal.org:project/scheduler.git
 ! [remote rejected] master (hook declined)
error: failed to push some refs to 'git@git.drupal.org:project/scheduler.git'

So I need to un-tie the master branch from what ever dev release it is linke to ... (?)

The development releases are fine. The master branch was last updated in Nov 2006 according to https://www.drupal.org/project/scheduler/releases/master however on https://www.drupal.org/project/scheduler/releases?page=2 it says Oct 2013
Either way, it is redundant and only has one file according to https://git.drupalcode.org/project/scheduler/tree/master

I'll raise an issue on the Git queue as you suggest.

The infracstucture issue is #3088526: Please delete contrib master release so that maintainer can delete master branch

#3088526: Please delete contrib master release so that maintainer can delete master branch has just been actions (thanks @drumm) and I have now deleted the master branch. https://git.drupalcode.org/project/scheduler no longer has 'master' in the list.