removed the extra changes

Author: Vinothini Dharmaraj

sdk/communication/azure-communication-callautomation/azure/communication/callautomation/_call_connection_client.py

@@ -569,7 +569,7 @@ def start_recognizing_media(
         interrupt_prompt: bool = False,
         dtmf_inter_tone_timeout: Optional[int] = None,
         dtmf_max_tones_to_collect: Optional[int] = None,
-        dtmf_stop_tones: Optional[List[str or 'DtmfTone']] = None,
+        dtmf_stop_tones: Optional[List[Union[str, DtmfTone]]] = None,
         speech_language: Optional[str] = None,
         choices: Optional[List['RecognitionChoice']] = None,
         end_silence_timeout: Optional[int] = None,

sdk/communication/azure-communication-callautomation/azure/communication/callautomation/aio/_call_connection_client_async.py

@@ -573,7 +573,7 @@ async def start_recognizing_media(
         interrupt_prompt: bool = False,
         dtmf_inter_tone_timeout: Optional[int] = None,
         dtmf_max_tones_to_collect: Optional[int] = None,
-        dtmf_stop_tones: Optional[List[str or 'DtmfTone']] = None,
+        dtmf_stop_tones: Optional[List[Union[str, DtmfTone]]] = None,
         speech_language: Optional[str] = None,
         choices: Optional[List['RecognitionChoice']] = None,
         end_silence_timeout: Optional[int] = None,
@@ -699,7 +699,6 @@ async def start_continuous_dtmf_recognition(
         target_participant: 'CommunicationIdentifier',
         *,
         operation_context: Optional[str] = None,
-        operation_callback_url: Optional[str] = None,
         **kwargs
     ) -> None:
         """Start continuous Dtmf recognition by subscribing to tones.