remove `@env` instance variable
remove `@env` instance variable

again, trying to remove coupling to the instance

imtayadeway/rack,davydovanton/rack,davidcelis/rack,supzann3/rack,davydovanton/rack,deepj/rack,maclover7/rack,wjordan/rack,rwz/rack,Eric-Guo/rack,akihiro17/rack,jackxxu/rack,wjordan/rack,wildjcrt/rack,maclover7/rack,laplaceliu/rack,jackxxu/rack,davidcelis/rack,akihiro17/rack,jackxxu/rack,supzann3/rack,liamseanbrady/rack,tylergannon/rack,Eric-Guo/rack,ngpestelos/rack,keepcosmos/rack,wjordan/rack,tylergannon/rack,akihiro17/rack,shaneog/rack,ngpestelos/rack,davidcelis/rack,supzann3/rack,imtayadeway/rack,davydovanton/rack,keepcosmos/rack,gfvcastro/rack,deepj/rack,gioele/rack,maclover7/rack,deepj/rack,imtayadeway/rack,eins78/rack,wildjcrt/rack,gfvcastro/rack,gioele/rack,Eric-Guo/rack,liamseanbrady/rack,keepcosmos/rack,tylergannon/rack,wildjcrt/rack,gioele/rack,shaneog/rack,ngpestelos/rack,rwz/rack,rwz/rack,eins78/rack,shaneog/rack,laplaceliu/rack,eins78/rack,gfvcastro/rack,liamseanbrady/rack,laplaceliu/rack