Revert "block: reject invalid operation in submit_bio_noacct"

This reverts commit 6c77d4e0 which is
commit 1c042f8d 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: Iafa5ab5d699da16d177c50ce5b7779f13afbde5a
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>