Select the Portals tab.
Select a portal server under Portals.
From the Select DN drop-down menu, choose the DN where the DiscussionProvider channel resides.
Select DP XML Tree as the View Type from the drop-down menu for a listing of all the channels and containers under DP_ROOT.
Select the container where the channel resides.
The container Tasks and Properties page displays.
Click Select Channel or Container to delete.
Select the DiscussionProvider channel.
Click Delete.