Stop maintaining our own altered copy of Python Twitter Tools source

See the comments on this [post](http://stackoverflow.com/questions/16192916/importerror-no-module-named-ssl-with-dev-appserver-py-from-google-app-engine).

Basically, using the experimental ssl module that is bundled with GAE works fine in production. The development server still throws errors, but there is a workaround.

Accepting this request reduces the amount of code we have to track, but also could prove to be a source of confusion or frustration for future developers. Perhaps I will make some additions to the readme so that other devs can jump on board if they choose.