Remove the coupon migration (added elsewhere)
Remove the coupon migration (added elsewhere)

jameshiew/dj-stripe,pydanny/dj-stripe,jleclanche/dj-stripe,jleclanche/dj-stripe,dj-stripe/dj-stripe,pydanny/dj-stripe,dj-stripe/dj-stripe,jameshiew/dj-stripe,tkwon/dj-stripe,kavdev/dj-stripe,kavdev/dj-stripe,tkwon/dj-stripe