Remove dependencies on pg and thin which break in JRuby and aren't strictly required anyway.
Remove dependencies on pg and thin which break in JRuby and aren't strictly required anyway.

git-svn-id: 45ce947a011953955b6465bff29178decf32f257@10124 bc291798-7d79-44a5-a816-fbf4f7d05ffa

johnmartirano/cg_services