Get rid of unused vars in builtin_unicode (they were causing
legit warnings).
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 8e2720b..2bae3eb 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -148,8 +148,6 @@
 	PyObject *args;
 {
         PyObject *v;
-	const void *buffer;
-	int len;
 	char *encoding = NULL;
 	char *errors = NULL;