Remove obsolete branches

[paulwellsagilej]

There are approximately 65 branches in the DROID project. Aside from master, there should be only feature branches for currently active development, and a release candidate once there is a code freeze. Release branches can be tagged. We really should merge or abandon the changes in other branches, and make sure we always delete a feature branch once it has been approved and merged.

[ross-spencer]

On the latter point you should be able to configure that in the repository settings now:

[paulwellsagilej]

Thank you Ross. Yes, the option to delete the feature branch is normally offered next to the merge button. I assumed that for whatever reason approvers have been leaving this unchecked.

[paulwellsagilej]

@CaptainBrad A large chunk of these branches have now been removed by @sparkhi - the last few will need consideration as to whether they contain useful changes which we might want to cherry pick or at least capture the author's intentions on the backlog.

[kurtismash]

I have enabled Automatically delete head branches for this repo, as suggested by @ross-spencer.