nfsd4: remove HAS_SESSION

This flag doesn't really buy us anything.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index d2a8d044..663193b 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -351,7 +351,7 @@
 
 struct nfsd4_test_stateid {
 	__be32		ts_num_ids;
-	__be32		ts_has_session;
+	bool		ts_has_session;
 	struct nfsd4_compoundargs *ts_saved_args;
 	struct nfsd4_saved_compoundargs ts_savedp;
 };