Removes unused package from requirements.
Removes unused package from requirements.

sketchytechky/zipline,semio/zipline,iamkingmaker/zipline,alphaBenj/zipline,morrisonwudi/zipline,jordancheah/zipline,dhruvparamhans/zipline,otmaneJai/Zipline,stkubr/zipline,grundgruen/zipline,wubr2000/zipline,aajtodd/zipline,DVegaCapital/zipline,bartosh/zipline,wubr2000/zipline,AlirezaShahabi/zipline,CDSFinance/zipline,MonoCloud/zipline,CarterBain/AlephNull,quantopian/zipline,kmather73/zipline,erikness/AlephOne,umuzungu/zipline,humdings/zipline,florentchandelier/zipline,kmather73/zipline,ronalcc/zipline,StratsOn/zipline,zhoulingjun/zipline,Scapogo/zipline,gwulfs/zipline,dhruvparamhans/zipline,florentchandelier/zipline,chrjxj/zipline,zhoulingjun/zipline,CDSFinance/zipline,wilsonkichoi/zipline,euri10/zipline,alphaBenj/zipline,magne-max/zipline-ja,dkushner/zipline,Scapogo/zipline,nborggren/zipline,gwulfs/zipline,chrjxj/zipline,morrisonwudi/zipline,umuzungu/zipline,AlirezaShahabi/zipline,dmitriz/zipline,humdings/zipline,nborggren/zipline,cmorgan/zipline,mattcaldwell/zipline,keir-rex/zipline,YuepengGuo/zipline,MonoCloud/zipline,dmitriz/zipline,davidastephens/zipline,YuepengGuo/zipline,michaeljohnbennett/zipline,magne-max/zipline-ja,wilsonkichoi/zipline,iamkingmaker/zipline,mattcaldwell/zipline,jimgoo/zipline-fork,keir-rex/zipline,StratsOn/zipline,dkushner/zipline,euri10/zipline,cmorgan/zipline,jimgoo/zipline-fork,bartosh/zipline,CarterBain/AlephNull,ChinaQuants/zipline,enigmampc/catalyst,semio/zipline,aajtodd/zipline,quantopian/zipline,stkubr/zipline,DVegaCapital/zipline,erikness/AlephOne,sketchytechky/zipline,enigmampc/catalyst,grundgruen/zipline,joequant/zipline,jordancheah/zipline,joequant/zipline,davidastephens/zipline,ChinaQuants/zipline,ronalcc/zipline,michaeljohnbennett/zipline,otmaneJai/Zipline