Remove obsolete browser.frames.enabled pref
Remove obsolete browser.frames.enabled pref

This was removed in https://bugzilla.mozilla.org/show_bug.cgi?id=1013457

pyllyukko/user.js,pyllyukko/user.js,nodiscc/user.js,nodiscc/user.js,Toromtomtom/user.js,Toromtomtom/user.js