diff --git a/libraries/botbuilder-core/botbuilder/core/teams/__init__.py b/libraries/botbuilder-core/botbuilder/core/teams/__init__.py
index 9acc2a250..d9d4847e8 100644
--- a/libraries/botbuilder-core/botbuilder/core/teams/__init__.py
+++ b/libraries/botbuilder-core/botbuilder/core/teams/__init__.py
@@ -7,7 +7,6 @@
 
 from .teams_activity_handler import TeamsActivityHandler
 from .teams_info import TeamsInfo
-from .teams_helper import deserializer_helper, serializer_helper
 from .teams_activity_extensions import (
     teams_get_channel_id,
     teams_get_team_info,
@@ -15,11 +14,9 @@
 )
 
 __all__ = [
-    "deserializer_helper",
     "TeamsActivityHandler",
     "TeamsInfo",
     "teams_get_channel_id",
     "teams_get_team_info",
     "teams_notify_user",
-    "serializer_helper",
 ]
diff --git a/libraries/botbuilder-core/botbuilder/core/teams/teams_activity_handler.py b/libraries/botbuilder-core/botbuilder/core/teams/teams_activity_handler.py
index 04725db13..6b541d7ff 100644
--- a/libraries/botbuilder-core/botbuilder/core/teams/teams_activity_handler.py
+++ b/libraries/botbuilder-core/botbuilder/core/teams/teams_activity_handler.py
@@ -5,7 +5,6 @@
 from botbuilder.schema import Activity, ActivityTypes, ChannelAccount
 from botbuilder.core import ActivityHandler, InvokeResponse, BotFrameworkAdapter
 from botbuilder.core.turn_context import TurnContext
-from botbuilder.core.teams.teams_helper import deserializer_helper, serializer_helper
 from botbuilder.core.teams.teams_info import TeamsInfo
 from botbuilder.schema.teams import (
     AppBasedLinkQuery,
@@ -23,6 +22,7 @@
     TaskModuleResponse,
 )
 from botframework.connector import Channels
+from .teams_helper import deserializer_helper, serializer_helper
 
 
 class TeamsActivityHandler(ActivityHandler):
@@ -433,12 +433,12 @@ async def on_teams_members_removed(
     async def on_teams_channel_deleted(  # pylint: disable=unused-argument
         self, channel_info: ChannelInfo, team_info: TeamInfo, turn_context: TurnContext
     ):
-        return  # Task.CompleteTask
+        return
 
     async def on_teams_channel_renamed(  # pylint: disable=unused-argument
         self, channel_info: ChannelInfo, team_info: TeamInfo, turn_context: TurnContext
     ):
-        return  # Task.CompleteTask
+        return
 
     @staticmethod
     def _create_invoke_response(body: object = None) -> InvokeResponse: