Remove tombloo.model.googlereader.quickadd.js

Google Reader is end.
https://www.google.com/reader/about/
Remove tombloo.service.twitter.changeaccount.js

Now Tombfix has this feature.
https://github.com/tombfix/core/commit/a182e3629930aeea10127d337208eabec8dc9a1e

And, now Tombloo's Account Changer is broken.
Merge pull request #1 from syoichi/pr1-remove

Remove unnecessary 2 patches