Issue #1656 - Remove more vim control lines.

Vim control lines were re-introduced or not entirely cleaned up.
This nukes them again.
Removing from modules, netwerk, security, storage, testing, toolkit, and
a few scattered misc files. More to come.

testing/xpcshell/example/unit/test_do_get_tempdir.js

@@ -1,5 +1,4 @@
 /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
-/* vim:set ts=2 sw=2 sts=2 et: */
 /* Any copyright is dedicated to the Public Domain.
  * http://creativecommons.org/publicdomain/zero/1.0/ */