Remove cf_push_on_git_change.sh
Remove cf_push_on_git_change.sh

It was used for pushing the graphite nozzle app, which was removed so we don't
need this script anymore.

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf