Revert "arm64: compat: Wire up new AArch32 syscalls"

The scheduler changes that this depends on have been temporarily
removed while an audio regression is investigated. Currently, it looks
like there may be additional missing commits that need to be pulled.
Once the audio regressions have been corrected, this should be pulled
back in.

This reverts commit c9bd306f.

Change-Id: Ic12f0911a4dd3469d4760c324b1499a8440feb48
Signed-off-by: Ian Maund <imaund@codeaurora.org>