Revert "posix-timers: Ensure timer ID search-loop limit is valid"

This reverts commit ef535e03 which is
commit 8ce8849d upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: Icdf91cda9a996fef8c8f5413b1b406a5fa936afb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>