I found out that by going to that folder you want to get rid of, you need to:
Click on "Tools."
A menu pops up.
Click on "View."
Around the middle of that screen there is a folder icon=Hidden files and folders:
It has 2 options. Do not show hidden files and folders and the one you want.
Show hidden files and folders.
Click "Apply," and close it out. Then delete the folder.
Hope it works for you,