Revert "ANDROID: Setting up GS before calling __restore_processor_state."

This reverts commit 6767ebd9.

It breaks the build in the 5.10.215 and we shouldn't need it anymore
because of the changes done in this area in that release.

Bug: 166163480
Cc: Haitao Shan <hshan@google.com>
Fixes: e2e4e7b4 ("Linux 5.10.215")
Change-Id: I303e5e02349aa5619382f529933363e2cceed66a
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>