Revert "ANDROID: mm: Create vendor hooks to control ZONE_MOVABLE allocations"

This reverts commit 62e32cf8 as it
causes merge issues with the readahead rework that happened in 5.18-rc1
and would be incorrect.

If it is still needed, it can be added back at a later time.

Bug: 158645321
Cc: Chris Goldsworthy <cgoldswo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I886f8a528cfed1d4c9a93468a9d2a4384fdecfe0