delete fdsys's update_bill_version_list function
delete fdsys's update_bill_version_list function

No one was using it: It had been broken for many months. See c1dc4bb4a9e556cae20aab901a99ba28c0dc5de8 and #103, #113.

unitedstates/congress,boblannon/congress,chriscondon/billtext,Nolawee/congress,boblannon/congress,sunlightlabs/congress-opencongress,chriscondon/billtext,Nolawee/congress,sunlightlabs/congress-opencongress,unitedstates/congress