xfs: don't reset i_delayed_blks in xfs_iread

i_delayed_blks is set to 0 in xfs_inode_alloc and can't have anything
assigned to it until the inode is visible to the VFS.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBrian Foster <bfoster@redhat.com>
Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>

fs/xfs/libxfs/xfs_inode_buf.c

@@ -663,8 +663,6 @@ xfs_iread(
 	if (error)
 		goto out_brelse;
 
-	ip->i_delayed_blks = 0;
-
 	/*
 	 * Mark the buffer containing the inode as something to keep
 	 * around for a while.  This helps to keep recently accessed