Remove float64 test
Remove float64 test

Summary:
float64 test breaks things on the cuda side. I am deleting it for now and if
we add it back, let's make sure we run the test on a GPU machine first :)

Reviewed By: azzolini

Differential Revision: D4324427

fbshipit-source-id: 0246fe9dd28a286422ca94c90f5b0fc33a162e74

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