google copilot import unneed code, remove it

Signed-off-by: haotian <haotian@ebay.com>

Author: sword865

python/ray/data/datasource/parquet_meta_provider.py

@@ -269,8 +269,6 @@ def _dedupe_fragment_metadata(
     """
     schema_to_id = {}  # schema_ser -> schema_id
     id_to_schema = {}  # schema_id -> schema_ser
-    schema_to_id = {}  # schema_ser -> schema_id
-    id_to_schema = {}  # schema_id -> schema_ser
 
     for metadata in metadatas:
         # Get the current schema serialization
@@ -289,5 +287,3 @@ def _dedupe_fragment_metadata(
             metadata.set_schema_pickled(existing_schema_ser)
 
     return metadatas
-
-    return stripped_metadatas