cifs: remove unnecessary dentry_unhash on rmdir/rename_dir
cifs: remove unnecessary dentry_unhash on rmdir/rename_dir

Cifs has no problems with lingering references to unlinked directory
inodes.

CC: Steve French <d47560e3bac353b8d509d093b1d727868ac7ddf3@samba.org>
CC: b6c52d765c0b71f41790656be9f258a9a42419a0@vger.kernel.org
Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@newdream.net>
Signed-off-by: Al Viro <de609eb4d5d70b1d38ec6642adbfc33a2781f63c@zeniv.linux.org.uk>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs