How to delete Voiceover / Sound effects?
You can remove the Voiceover or Sound effects when you accidently inserted them into the workspace.
Step 1: Open SoundTrack Timeline available at the bottom. You have 3 tracks available inside the timeline.
Step 2: Select the Voice-over / Sound file which you want to delete.
Step 3: Just hit the Delete button / Click on the file and then choose Delete. That's it.