Revert inclusion of psycopg2 library.  looks like there are better ways to make sure this is included on ubuntu/debian hosts.
Revert inclusion of psycopg2 library.  looks like there are better ways to make sure this is included on ubuntu/debian hosts.

penzance/ab-testing-tool,penzance/ab-testing-tool,penzance/ab-testing-tool,penzance/ab-testing-tool