afs: Remove unused structure afs_store_status

While looking for kuid_t and kgid_t conversions I found this
structure that has never been used since it was added to the
kernel in 2007.  The obvious for this structure to be used
is in xdr_encode_AFS_StoreStatus and that function uses a
small handful of local variables instead.

So remove the unnecessary structure to prevent confusion.

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

fs/afs/afs.h

@@ -133,13 +133,6 @@ struct afs_file_status {
 /*
  * AFS file status change request
  */
-struct afs_store_status {
-	u32			mask;		/* which bits of the struct are set */
-	u32			mtime_client;	/* last time client changed data */
-	u32			owner;		/* owner ID */
-	u32			group;		/* group ID */
-	umode_t			mode;		/* UNIX mode */
-};
 
 #define AFS_SET_MTIME		0x01		/* set the mtime */
 #define AFS_SET_OWNER		0x02		/* set the owner ID */