remove fd-commit, no active devs use it, and requires Auto Name/Name

remove fd-commit, no active devs use it, and requires Auto Name/Name

fd-commit and checkupdates both require that there are two name fields,
AutoName: and Name:.  This is only used for the commit messages.  Since the
current devs do it manually, we can remove the fd-commit shell script, then
focus on checkupdates when revamping AutoName/Name.

https://botbot.me/freenode/fdroid-dev/msg/82539152