[pre-commit.ci] auto fixes from pre-commit.com hooks

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deepmd/pt/model/task/dipole.py

@@ -134,11 +134,9 @@ def output_def(self) -> FittingOutputDef:
             ]
         )
 
-
     def compute_output_stats(self, merged, stat_file_path: Optional[DPPath] = None):
         raise NotImplementedError
 
-
     def forward(
         self,
         descriptor: torch.Tensor,