remove python convnd function

Author: killeent

torch/nn/_functions/conv.py

@@ -20,15 +20,13 @@ def _get_thnn_function_backend():
 
 def _initialize_backend():
     from .._functions.thnn import _all_functions as _thnn_functions
-    from .._functions.conv import ConvNd
     from .._functions.rnn import RNN, \
         RNNTanhCell, RNNReLUCell, GRUCell, LSTMCell
     from .._functions.dropout import Dropout, FeatureDropout
     from .._functions.activation import Softsign
     from .._functions.loss import CosineEmbeddingLoss, \
         HingeEmbeddingLoss, HingeEmbeddingLossBackward, MarginRankingLoss
 
-    backend.register_function('ConvNd', ConvNd)
     backend.register_function('RNN', RNN)
     backend.register_function('RNNTanhCell', RNNTanhCell)
     backend.register_function('RNNReLUCell', RNNReLUCell)