rev_list_insert_ref(): remove unneeded arguments

Now that the function is not being used as an each_ref_sha1_fn, we can
delete the unused arguments in its signature.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/fetch-pack.c b/fetch-pack.c
index 28c54c3..a1dcb27 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -60,7 +60,7 @@
 	}
 }
 
-static int rev_list_insert_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int rev_list_insert_ref(const char *refname, const unsigned char *sha1)
 {
 	struct object *o = deref_tag(parse_object(sha1), refname, 0);
 
@@ -73,7 +73,7 @@
 static int rev_list_insert_ref_oid(const char *refname, const struct object_id *oid,
 				   int flag, void *cb_data)
 {
-	return rev_list_insert_ref(refname, oid->hash, flag, cb_data);
+	return rev_list_insert_ref(refname, oid->hash);
 }
 
 static int clear_marks(const char *refname, const struct object_id *oid,
@@ -233,7 +233,7 @@
 
 static void insert_one_alternate_ref(const struct ref *ref, void *unused)
 {
-	rev_list_insert_ref(NULL, ref->old_sha1, 0, NULL);
+	rev_list_insert_ref(NULL, ref->old_sha1);
 }
 
 #define INITIAL_FLUSH 16