cuda manual_seed is not necessary

Author: kumuji

pytorch_lightning/trainer/seed.py

@@ -27,5 +27,3 @@ def seed_everything(seed: int = None):
     random.seed(seed)
     np.random.seed(seed)
     torch.manual_seed(seed)
-    if torch.cuda.is_available():
-        torch.cuda.manual_seed(seed)