remove unused file http.go
remove unused file http.go

bluebreezecf/heapster,jackzampolin/heapster,mwringe/heapster,wulonghui/heapster,whuwxl/heapster,titilambert/heapster,Stackdriver/heapster,andyxning/heapster,taimir/heapster,saiwl/heapster,wulonghui/heapster,vicki-c/heapster,whuwxl/heapster,Stackdriver/heapster,vicki-c/heapster,jackzampolin/heapster,bruceauyeung/heapster,skytap/heapster,shilpamayanna/heapster,AlmogBaku/heapster,piosz/heapster,shilpamayanna/heapster,piosz/heapster,AlmogBaku/heapster,liubog2008/heapster,aegixx/heapster,Huawei-PaaS/heapster,taimir/heapster,huangyuqi/heapster,andyxning/heapster,Huawei-PaaS/heapster,bluebreezecf/heapster,huangyuqi/heapster,luxas/heapster,skytap/heapster,titilambert/heapster,mwringe/heapster,burmanm/heapster,burmanm/heapster,johanneswuerbach/heapster,bruceauyeung/heapster,saiwl/heapster,aegixx/heapster,krzyzacy/heapster,johanneswuerbach/heapster,adfin/statster,liubog2008/heapster,krzyzacy/heapster,adfin/statster,luxas/heapster