In addition to all the good advice you’ve already received, there are also several easy ways to insert only the video (without audio) into a timeline in the first place, so you don’t have to remove it later.
If you disable the track destination controls on any audio tracks, the audio will have nowhere to go and won’t be added to the timeline. If you’re a person who uses drag-and-drop to add clips to the timeline, you can also hover your mouse over the source viewer and you’ll see an option to choose audio-only or video-only.
I use the track destination controls myself, since I insert all my clips using keyboard shortcuts and based on the playhead position; it’s faster and more precise. And the track destination controls allow you to choose exactly which tracks your video and audio land in when you edit them into the timeline. Especially useful when you have lots and lots of tracks!