Things You'll Need
Instructions
Download WAD Manager on your computer and place the contents of the .zip file on your SD card.
Open the HomeBrew channel on your soft-modded Wii. Select WAD Manager to load the application.
Select the location of the WAD file. You may be using the system's internal storage if the channel was originally installed there. You may also have it installed using the SD card or on a USB drive.
Press "A" and navigate to "uninstall WAD." Uninstalling the WAD will remove it from your system completely and delete the channels from your main menu. Do not use the Wii's built in channel manager because the title will still be listed on the system, while using WAD manager deletes the channel entirely.