Flirting and idioms
I stupidly bought these, is there anyway to get rid of them?
No, but if you're not comfortable to do them now, you can just ignore them.
They won't be picked up for strenghthening. And they do not prevent the owl to be shown when you finished your tree.
But I even deleted and re-opened courses and they were still there. At least I do not have to buy them again.
There isn't a way to remove them. All I know is, it's quite irritating to have to work on them to keep my whole tree golden. They have 5 sentences stretched across twenty practices in each lesson. At least in the basic lessons, they adjust the lesson length to more adequately match the content.