fix: remove trailing whitespace to fix ruff format check

Co-Authored-By: Aaron <AJ> Steers <[email protected]>

Author: devin-ai-integration[bot]

airbyte_cdk/sources/file_based/file_types/unstructured_parser.py

@@ -457,7 +457,6 @@ def _get_filetype(self, file: IOBase, remote_file: RemoteFile) -> Optional[FileT
             for file_type in FileType:
                 if file_type.name.lower() == extension[1:].lower():
                     return file_type
-                    
         if remote_file.uri.endswith(".md") or remote_file.mime_type == "text/markdown":
             return FileType.MD