removed unused form in schedule_edit
removed unused form in schedule_edit

TheOpenBastion/symposion,miurahr/symposion,pyconca/2013-web,pinax/symposion,mbrochh/symposion,pinax/symposion,pyohio/symposion,NelleV/pyconfr-test,toulibre/symposion,pyconau2017/symposion,faulteh/symposion,pyohio/symposion,toulibre/symposion,miurahr/symposion,faulteh/symposion,python-spain/symposion,python-spain/symposion,pyconca/2013-web,euroscipy/symposion,mbrochh/symposion,euroscipy/symposion,pydata/symposion,pyconau2017/symposion,TheOpenBastion/symposion,pydata/symposion,NelleV/pyconfr-test