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

setup.py

@@ -74,7 +74,7 @@ setup(name='fdroidserver',
       url='https://f-droid.org',
       license='AGPL-3.0',
       packages=['fdroidserver', 'fdroidserver.asynchronousfilereader'],
-      scripts=['fdroid', 'fd-commit', 'makebuildserver'],
+      scripts=['fdroid', 'makebuildserver'],
       data_files=get_data_files(),
       python_requires='>=3.4',
       cmdclass={'versioncheck': VersionCheckCommand},