How can I remove my presentations from any channel?

You can remove the presentations from any channel which you added by following the easy steps below: 

• Click My Stuff tab, click My Presentations link
• Look for the presentation which you added in a channel
• Click More tab in the presentation block, select Add to Channel link
• Channel Settings window appears onscreen
• Click Remove from Channel link 
  

And, your presentation gets removed from the channel.