Revert "ANDROID: Sched: Add restricted vendor hooks for scheduler"

This reverts commit 292f4308 as the
upstream scheduler changes causes too many merge conflicts such that the
placement of these hooks can no longer guaranteed to be correct.

Bug: 173725277
Signed-off-by: Shaleen Agrawal <shalagra@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I204571a761d6aecdd6ea99e2e8a3e6824f5261cb