Remove old entry points

Remove old entry points lying around in the autotest tree. When autotest was packaged as RPM, it was evident that we needed entry points with more clear and distinct names than the ones we had.

So we came up with a bunch of new names for the entry points. Back then, I was too worried about the sheer amount of entry point calls, so I did not delete the old entry points entirely, leaving the ones inside 'client' and 'server' intact.

Now, in order to avoid confusion, let's complete the transition, enforce the new entry point names and remove the old ones. This change has the potential to break functionality in the server mode, so caution is necessary here.