diff --git a/deel/torchlip/modules/normalization.py b/deel/torchlip/modules/normalization.py
index ddc7d2f..bb5fd43 100644
--- a/deel/torchlip/modules/normalization.py
+++ b/deel/torchlip/modules/normalization.py
@@ -23,9 +23,6 @@ def forward(self, x):
 
 
 LayerCentering2d = LayerCentering
-# class LayerCentering2D(LayerCentering):
-#     def __init__(self, size = 1, dim=[-2,-1]):
-#         super(LayerCentering2D, self).__init__(size = size,dim=[-2,-1])
 
 
 class BatchCentering(nn.Module):
@@ -72,25 +69,4 @@ def forward(self, x):
             return x - mean.view(mean_shape)
 
 
-# class BatchCenteringBiases(BatchCentering):
-#     def __init__(self, size =1, dim=[0,-2,-1], momentum=0.05):
-#         super(BatchCenteringBiases, self).__init__(size  = size, dim = dim, momentum = momentum)
-#         if isinstance(size, tuple):
-#             self.alpha = nn.Parameter(torch.zeros(size), requires_grad=True)
-#         else:
-#             self.alpha = nn.Parameter(torch.zeros(1,size,1,1), requires_grad=True)
-
-#     def forward(self, x):
-#         #print(x.mean(dim=self.dim, keepdim=True).abs().mean().cpu().numpy(), self.running_mean.abs().cpu().mean().numpy(), self.alpha.abs().mean().cpu().numpy())
-#         #print(x.mean(dim=self.dim, keepdim=True).abs().mean().cpu().numpy(),(x.mean(dim=self.dim, keepdim=True)-self.running_mean).abs().mean().cpu().numpy())
-#         return super().forward(x) + self.alpha
-
 BatchCentering2d = BatchCentering
-
-# class BatchCenteringBiases2D(BatchCenteringBiases):
-#     def __init__(self, size =1, momentum=0.05):
-#         super(BatchCenteringBiases2D, self).__init__(size = size, dim=[0,-2,-1],momentum=momentum)
-
-# class BatchCentering2D(BatchCentering):
-#     def __init__(self, size =1, momentum=0.05):
-#         super(BatchCentering2D, self).__init__(size = size, dim=[0,-2,-1],momentum=momentum)
diff --git a/tests/test_normalization.py b/tests/test_normalization.py
index 382180c..6aa3d5f 100644
--- a/tests/test_normalization.py
+++ b/tests/test_normalization.py
@@ -26,7 +26,6 @@
 # =====================================================================================
 import os
 import pytest
-from functools import partial
 
 import numpy as np
 
@@ -249,6 +248,6 @@ def test_BatchCentering_runningmean(size, input_shape, bias):
         mean_x = np.mean(x, axis=(0, 2, 3))
     x = uft.to_tensor(x)
     for _ in range(1000):
-        y = bn(x)
+        y = bn(x)  # noqa: F841
 
     np.testing.assert_allclose(bn.running_mean, mean_x, atol=1e-5)