fix keyphrase insertion issue

Author: Pavan-Microsoft

infra/scripts/index_scripts/04_cu_process_data_new_data.py

@@ -364,7 +364,6 @@ def prepare_search_doc(content, document_id):
 directory_name = audio_directory
 paths = file_system_client.get_paths(path=directory_name)
 print("Processing audio files")
-conversationIds = []
 docs = []
 counter = 0
 # process and upload audio files to search index