[hotfix] Remove dead code (#1942)

* Remove dead code

* Fix
Co-authored-by: Ubuntu <ubuntu@ip-172-31-51-214.ec2.internal>

examples/pytorch/rgcn-hetero/entity_classify_mb.py

@@ -104,18 +104,12 @@ def main(args):
         batch_size=args.batch_size, shuffle=True, num_workers=0)
 
     # validation sampler
+    # we do not use full neighbor to save computation resources
     val_sampler = dgl.sampling.MultiLayerNeighborSampler([args.fanout] * args.n_layers)
     val_loader = dgl.sampling.NodeDataLoader(
         g, {category: val_idx}, val_sampler,
         batch_size=args.batch_size, shuffle=True, num_workers=0)
 
-    # test sampler
-
-    test_sampler = dgl.sampling.MultiLayerNeighborSampler([args.fanout] * args.n_layers)
-    test_loader = dgl.sampling.NodeDataLoader(
-        g, {category: test_idx}, test_sampler,
-        batch_size=args.batch_size, shuffle=True, num_workers=0)
-
     # optimizer
     all_params = itertools.chain(model.parameters(), embed_layer.parameters())
     optimizer = th.optim.Adam(all_params, lr=args.lr, weight_decay=args.l2norm)

python/dgl/backend/pytorch/sparse.py

@@ -116,7 +116,6 @@ class GSpMM(th.autograd.Function):
                 elif op in ['add', 'sub', 'copy_rhs']:
                     dY.scatter_add_(0, argY.long(), _addsub(op, dZ))
             dY = _reduce_grad(dY, Y.shape)
-            print('jesus2')
         else:  # Y has no gradient
             dY = None
         return None, None, None, dX, dY