Merge pull request #504 from microsoft/josh/cleanUp

removing testing method

Author: axelsrz

libraries/botbuilder-core/botbuilder/core/teams/teams_activity_extensions.py

@@ -2,10 +2,6 @@
 from botbuilder.schema.teams import NotificationInfo, TeamsChannelData, TeamInfo
 
 
-def dummy():
-    return 1
-
-
 def teams_get_channel_id(activity: Activity) -> str:
     if not activity:
         return None