MAINT: Clean up data freq inference in `TradingAlgorithm.run`.
MAINT: Clean up data freq inference in `TradingAlgorithm.run`.

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