clean up legacy code
clean up legacy code

CVML/coco,chenfsjz/coco,mprat/coco,mprat/coco,DeercoderResearch/0.5-CoCo,pdollar/coco,victorgan/coco,yxliang/coco,pdollar/coco,victorgan/coco,CVML/coco,DeercoderResearch/0.5-CoCo,yxliang/coco,victorgan/coco,mprat/coco,gnauhnoj/coco,DeercoderResearch/CoCo,victorgan/coco,DeercoderResearch/CoCo,DeercoderResearch/0.5-CoCo,gnauhnoj/coco,mprat/coco,chenfsjz/coco,DeercoderResearch/CoCo,yxliang/coco,gnauhnoj/coco,CVML/coco,DeercoderResearch/CoCo,DeercoderResearch/0.5-CoCo,chenfsjz/coco,CVML/coco,chenfsjz/coco,pdollar/coco,gnauhnoj/coco,yxliang/coco,pdollar/coco