fixing lint issues

Signed-off-by: kta-intel <[email protected]>

openfl-workspace/torch_cnn_mnist_fed_eval/src/pt_cnn.py

@@ -6,7 +6,6 @@
 import torch
 import torch.nn as nn
 import torch.nn.functional as F
-import torch.optim as optim
 import tqdm
 
 from openfl.federated import PyTorchTaskRunner
@@ -96,7 +95,6 @@ def init_network(self,
             print(self)
         self.to(device)
 
-
     def forward(self, x):
         """Forward pass of the model.
 
@@ -167,7 +165,6 @@ def validate(self, col_name, round_num, input_tensor_dict, use_tqdm=False, **kwa
         # Empty list represents metrics that should only be stored locally
         return output_tensor_dict, {}
 
-
     def save_native(self, filepath):
         """
         Save model in a picked file specified by the filepath.