Revert "ENH: allow the psychopy app to --run a python script without loading the app interface"

This reverts commit 5712203561b461f62b4188fc4bed7372b8193162.
Revert "FF: trying to fix travis issue with commit 5712203561"

This reverts commit cf366fc8d18e3ee85d7d999f233d881c3dab2a19.