label_type option was duplicated in image_input_op
label_type option was duplicated in image_input_op

Summary: Duplicated label_type removed

Reviewed By: zem7

Differential Revision: D5753003

fbshipit-source-id: 7f2917ec201ecd859e9462622ddce637b84a3da7

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