Text based editing on a (only) audio file track

Hello everyone,
I'm new to using Premiere Pro, and I have a question about the new text-based editing feature in Premiere Pro. I recorded an audio voice-over for a video, but I need to edit it by removing parts where I made mistakes and then corrected them, or by cutting out moments of silence. I've seen a video where you can remove and edit these parts easily by just selecting and deleting, which removes both the audio and video segments from the sequence. I want to do this, but only for an audio file. Is that possible? When I try to delete, nothing happens.