Remove advanced search

The removal of advanced search is about to land on production. This pr removed the page object + attributes + tests associated with advanced search.
* Remedy for issue  #287 
* Proof is in the pudding 
** prod run http://selenium.qa.mtv2.mozilla.com:8080/view/Socorro/job/socorro.matt.remove_adv_search/1/
** stage run http://selenium.qa.mtv2.mozilla.com:8080/view/Socorro/job/socorro.matt.remove_adv_search/2/ - note failure is unrelated -- issue already on file -- #285