Remove bin/switch-country.py script
Remove bin/switch-country.py script

This script is no longer needed after the recent changes to the vagrant
setup. It's now easiest to use a different clone for each country you're
working on. Pretty soon we'll have a different repository for each
country.

mysociety/pombola,mysociety/pombola,mysociety/pombola,mysociety/pombola,mysociety/pombola,mysociety/pombola