fix: Removed duplicate field definitions in some classes (#31888)

Removed duplicate field definitions in classes.

examples/research_projects/jax-projects/model_parallel/run_clm_mp.py

@@ -156,9 +156,6 @@ class DataTrainingArguments:
             )
         },
     )
-    overwrite_cache: bool = field(
-        default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
-    )
     preprocessing_num_workers: Optional[int] = field(
         default=None,
         metadata={"help": "The number of processes to use for the preprocessing."},