Revert "xfs: grab dquots without taking the ilock"

Revert "xfs: grab dquots without taking the ilock"

Source kernel commit: 0891f9971a3b00d243d5743cc78a628ad060adea

This reverts commit cfcce6478cee639b15cd50e68cf66f884e137312.

The new XFS_QMOPT_NOLOCK isn't used at all, and conditional locking based
on a flag is always the wrong thing to do - we should be having helpers
that can be called without the lock instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>