Can I delete files created by others in a directory I own? [duplicate]
Solution 1:
Deleting a file (or empty directory) requires write access to the parent directory, which you have as owner.
Deleting a non-empty directory requires that you empty the directory first, which you can't do, as you don't have write access to that directory (as it was created by other users).
So you need to use sudo to get root access to delete those directories.
Solution 2:
You could add your account to sudoers and 'sudo rm -R' the folder.
I am not aware of a setting you can apply to do it normally.