MAINT: Removing confusing parameter where we only use default
MAINT: Removing confusing parameter where we only use default

magne-max/zipline-ja,bartosh/zipline,magne-max/zipline-ja,wilsonkichoi/zipline,nborggren/zipline,umuzungu/zipline,nborggren/zipline,Scapogo/zipline,enigmampc/catalyst,quantopian/zipline,humdings/zipline,enigmampc/catalyst,quantopian/zipline,umuzungu/zipline,bartosh/zipline,alphaBenj/zipline,florentchandelier/zipline,Scapogo/zipline,alphaBenj/zipline,humdings/zipline,florentchandelier/zipline,wilsonkichoi/zipline