Well, damn. Two weeks, and still no eggs in it. I guess it’s been abandoned?
Have you seen a bird go in to it? I would think the female would lay pretty soon after completing the nest, and it looked pretty close to being finished to me. If you haven’t noticed birds going to the nest to work on it, and there are no eggs, then it’s probably abandoned.
Sigh. No, I never did see any bird go into it - I was at least hoping to find out what kind of bird built the nest. (Although Robin seems the most likely).
Oh well. I feel so alone…like someone who’s children are all in college now…I wish there were a name for this sensation. 
Trash it! Nothing worse that bird offal all over your welcome mat. Not just a good idea, but an afternoon of fun and entertainment!
I’ve had to do this a number of times in my garage. I would be content to let them stay, but they always shit on the BMW and the classic motorcycles. So they must die. I capped the cuteist little red-headed finchy guy and his mate last week. Almost brought a tear to my eye, till I walked over to the GB500 and saw big white splats of crap on the freshly waxed tank.