Personally I wouldn't bother. You say you can't see it (confirmed by your photo) and you won't be anywhere near it when you are playing - it's not as if it is on the back of the neck where you would feel it .
However, if you want to remove it try Micromesh, often used by violin makers. There are a lot of reviews on Amazon but it is cheaper to get it from Axminster in the first link.
Latecomer to uke but loving it! Baton Rouge U108S soprano, Kiwaya KS-5 soprano, Uluru II concert low G, Barnes & Mullins banjolele UBJ2.