TST: Some futures-related fixtures cleanup.
TST: Some futures-related fixtures cleanup.

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