Bookmarks on the home screen?

Hello!

I've added a few websites to my home screen. But now I want to remove them, but it doesn't work. There's no minus sign or button that says "remove." This bookmark doesn't wobble like the other apps.

It's on my school iPad and it will most likely be checked after the holidays, so I'm grateful to anyone who might know how to get rid of it.

Thanks

(As seen in the picture here)