cifs: get rid of unused arguments of CIFSSMBWrite()

they used to be used, but...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 062c237..d031af8 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -399,7 +399,7 @@
 	io_parms.offset = 0;
 	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
 
-	rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf, NULL, 0);
+	rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf);
 	CIFSSMBClose(xid, tcon, fid.netfid);
 	return rc;
 }