[nojira]  Removing code cruft.  

 The action removed was VERY old and had a server URL baked into the code.  Also removed the associated gem that was only used  by that action (HTTParty).

This is a followup to [Pull Request 122](https://github.com/ets-berkeley-edu/datacultures/pull/122), itself a reversion of [Pull Request 116](https://github.com/ets-berkeley-edu/datacultures/pull/116) changes, which both refactored session initialization but also removed the cruft now being removed here.   (So this is part of what happened in 116, the non-breaking part).