Uninstall all parallels?

I went to File -> Delete, deleted windows (I think).
I want to delete all the files related to parallels and switch it back so my mac has more space.
I remember when I installed it, it reserved around 50 GB for windows.

Did that switch back to my mac to use when I deleted windows? If not, how would I do that?
Also how do I delete all files related to parallels? (I've tried searching for it using the forum search function, but too many hits). -sigh-

Thanks again!
(Links to existing threads would be fantastic too, I can't seem to find any)

 

I suppose you want to delete Virtual Machine you created
if yes go Documents Parallels and delete pvm files with Parallels Desktop icons (or just files inside that folder)
Just be sure that you are deleting the Virtual Machine which is no longer is needed, you won't be able to get data which was in Windows