This is a clean up patch that merges xfs_delattr_context into
xfs_attr_item.  Now that the refactoring is complete and the delayed
operation infrastructure is in place, we can combine these to eliminate
the extra struct
Signed-off-by: NAllison Henderson <allison.henderson@oracle.com>
Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: NChandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: NDave Chinner <david@fromorbit.com>