LU-20 ldiskfs: remove spurious warning message

LU-20 ldiskfs: remove spurious warning message

Remove the spurious warning message that we added for the missing
extents option since the MDS never gets the extents option enabled.

	ldiskfs_fill_super: extents feature not enabled on this
	filesystem, use tune2fs

Remove the obsolete patch that removed this from the patch we added.

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I9d896258b89ec3db528db59094572daac8dc207b
Reviewed-on: http://review.whamcloud.com/1572
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Yu Jian <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>