Do not propagate gradients for GatherRangesToDense
Do not propagate gradients for GatherRangesToDense

Summary: as title

Differential Revision: D5997854

fbshipit-source-id: a4f1cadfbd8057b01517e49f23f61b2029fa6099

pietern/caffe2,sf-wind/caffe2,pietern/caffe2,davinwang/caffe2,caffe2/caffe2,davinwang/caffe2,pietern/caffe2,xzturn/caffe2,pietern/caffe2,xzturn/caffe2,Yangqing/caffe2,xzturn/caffe2,sf-wind/caffe2,sf-wind/caffe2,Yangqing/caffe2,Yangqing/caffe2,sf-wind/caffe2,xzturn/caffe2,Yangqing/caffe2,xzturn/caffe2,davinwang/caffe2,pietern/caffe2,Yangqing/caffe2,sf-wind/caffe2,davinwang/caffe2,davinwang/caffe2