make fix-copies

Author: a-r-r-o-w

src/diffusers/models/unets/unet_2d_blocks.py

@@ -739,11 +739,7 @@ def forward(self, hidden_states: torch.Tensor, temb: Optional[torch.Tensor] = No
             if torch.is_grad_enabled() and self.gradient_checkpointing:
                 if attn is not None:
                     hidden_states = attn(hidden_states, temb=temb)
-                hidden_states = self._gradient_checkpointing_func(
-                    resnet,
-                    hidden_states,
-                    temb,
-                )
+                hidden_states = self._gradient_checkpointing_func(resnet, hidden_states, temb)
             else:
                 if attn is not None:
                     hidden_states = attn(hidden_states, temb=temb)