How to remove a Beeping noise in my Video

Hi, guys,

I have a small problem. and I think it's huge.

a few days ago we video recorded an event. and we use a camera and a BOYA wireless microphone. and there was nothing wrong with both types of equipment. but after the video recording is over we replay it again and we heard a nonstop beeping noise. I am thousands of sure. we didn't hear that on the event. but in the video its there. the problem is when I try to remove it I saw it like this. how to remove it. I try to select it and delete it. but then the voice is disappearing too. I am using adobe audition. and I am new to it. can someone please explain to me this. and answer me. the whole beep is in the whole section from top to bottom.