Remove Apple Bitcode support

Apple has deprecated Bitcode support in XCode 14 with a loud warning
asking users to stop using it, and submissions to the App Store now
strip bitcode information. Time to just delete all the relevant code.

Part-of: <gstreamer/cerbero!879>
13 jobs for !879 with remove-bitcode-support in 120 minutes and 40 seconds (queued for 1 second)
merge request