record: remove useless line in test stable

record: remove useless line in test

Remove a useless line in test to make the next patch cleaner.

--- a/tests/test-commit-interactive.t	Fri Apr 24 23:52:41 2015 +0900
+++ b/tests/test-commit-interactive.t	Thu Apr 23 16:59:11 2015 -0700
@@ -315,7 +315,6 @@
   > y
   > y
   > y
-  > y
   > EOF
   diff --git a/plain b/plain
   1 hunks, 1 lines changed