니까 넘어가다

since it's X, move on

"-(으)니까" gives the reason and 넘어가다 means to move past something. Most lines are a host skipping ahead: it's not today's topic so we'll move on, it isn't that interesting so let's move on, it's messy so we'll skip it, I don't know so I'll pass. The other reading is letting something go rather than making an issue of it — it was only a mistake, so it could be let go; that's just the sides, so never mind.

Register: conversational, often a host speaking