Erase brushes

[Semaj]

I have some homemade brushes I made and no longer want.
I cannot find out how to erase these unwanted ones.

I surfed the Internet and found a couple of replies but none worked for me.
For example, one suggested using the trash container icon at the bottom. I
could not find any trash containers.

Thanks for reading
Semaj

Windows 10
GIMP 2.10.14