[CIFS] Remove some unused functions/declarations

Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --cc fs/cifs/cifsfs.c
Simple merge

diff --cc fs/cifs/cifsfs.h
Simple merge

diff --cc fs/cifs/cifsglob.h
Simple merge

diff --cc fs/cifs/cifsproto.h
Simple merge

diff --cc fs/cifs/dir.c
Simple merge

diff --cc fs/cifs/inode.c
Simple merge