Removes unused `gens.merge` module.
Removes unused `gens.merge` module.

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