Fixing unit tests post rebase

Some changes that merged cleanly actually broke the unit
tests, so this fixes them.

tests-clar/diff/diff_helpers.c

@@ -84,23 +84,3 @@ int diff_line_fn(
 	}
 	return 0;
 }
-
-git_tree *resolve_commit_oid_to_tree(
-	git_repository *repo,
-	const char *partial_oid)
-{
-	size_t len = strlen(partial_oid);
-	git_oid oid;
-	git_object *obj;
-	git_tree *tree;
-
-	if (git_oid_fromstrn(&oid, partial_oid, len) == 0)
-		git_object_lookup_prefix(&obj, repo, &oid, len, GIT_OBJ_ANY);
-	cl_assert(obj);
-	if (git_object_type(obj) == GIT_OBJ_TREE)
-		return (git_tree *)obj;
-	cl_assert(git_object_type(obj) == GIT_OBJ_COMMIT);
-	cl_git_pass(git_commit_tree(&tree, (git_commit *)obj));
-	git_object_free(obj);
-	return tree;
-}

tests-clar/diff/iterator.c

@@ -238,9 +238,9 @@ static const char *expected_index_oids_0[] = {
 	"5819a185d77b03325aaf87cafc771db36f6ddca7",
 	"ff69f8639ce2e6010b3f33a74160aad98b48da2b",
 	"45141a79a77842c59a63229403220a4e4be74e3d",
-	"45141a79a77842c59a63229403220a4e4be74e3d",
-	"45141a79a77842c59a63229403220a4e4be74e3d",
-	"fb5067b1aef3ac1ada4b379dbcb7d17255df7d78",
+	"4d713dc48e6b1bd75b0d61ad078ba9ca3a56745d",
+	"108bb4e7fd7b16490dc33ff7d972151e73d7166e",
+	"fe773770c5a6cc7185580c9204b1ff18a33ff3fc",
 	"99eae476896f4907224978b88e5ecaa6c5bb67a9",
 	"3e42ffc54a663f9401cc25843d6c0e71a33e4249",
 	"e563cf4758f0d646f1b14b76016aa17fa9e549a4",