[Refactor]: fix linting errors to pass pre-commit checks

Author: Ibinarriaga8

sota-implementations/cql/utils.py

@@ -18,8 +18,7 @@
     TensorDictPrioritizedReplayBuffer,
     TensorDictReplayBuffer,
 )
-from torchrl.data.datasets.d4rl import D4RLExperienceReplay
-from torchrl.data.datasets.minari_data  import MinariExperienceReplay 
+from torchrl.data.datasets.minari_data import MinariExperienceReplay
 from torchrl.data.replay_buffers import SamplerWithoutReplacement
 from torchrl.envs import (
     CatTensors,