Revert "ANDROID: vendor_hooks: Add hook for binder_detect_low_async_space_locked"

This reverts commit 7ce11730.

The alloc->mutex to spinlock_t patches from [1] are being backported
into this branch. The vendor hooks will be reapplied on top of these
backports in a way that matches the new structure of the code.

Link: https://lore.kernel.org/all/20231201172212.1813387-1-cmllamas@google.com/

 [1]
Change-Id: I7f4aaab31b4462a40881c596abdcbef835a32e4a
Signed-off-by: Carlos Llamas <cmllamas@google.com>