Hi there @nouriazadeh,
Thanks for posting in the Roku Community!
I understand that you want to know how to remove your installed channel, is that correct?
Have you tried the steps I posted above to see if they answer your inquiry?
Here are the easy steps on how to Remove channels from within your channel lineup.
- Press Home on your Roku remote
- Move to the right and highlight the channel you wish to remove
- Press Star on your remote to open the Options menu
- Select Remove channel and confirm when prompted
For more information, see this additional resource: How to remove channels from your Roku® streaming device | Official Roku Support
If you still need help, please don't hesitate to keep us posted.