Revert "Open tags should have closing tags"

This reverts commit aeca8807db.

We specifically DON'T have closing tags so we don't get errors with
whitespace after the closing tag.

I realize this is less of an issue with scripts, but we should still
not use closing tags.

scripts/triminboxes.php

@@ -54,4 +54,3 @@ $cnt = $user->find();
 while ($user->fetch()) {
     Notice_inbox::gc($user->id);
 }
-?>