Remove unnecessary imports

src/decentralizepy/datasets/Celeba.py

@@ -3,7 +3,6 @@ import logging
 import os
 from collections import defaultdict
 
-import matplotlib.pyplot as plt
 import numpy as np
 import torch
 import torch.nn.functional as F

src/decentralizepy/datasets/Femnist.py

@@ -3,7 +3,6 @@ import logging
 import os
 from collections import defaultdict
 
-import matplotlib.pyplot as plt
 import numpy as np
 import torch
 import torch.nn.functional as F

src/decentralizepy/sharing/Sharing.py

 import logging
-import pickle
 from collections import deque
 
-import numpy
 import torch