Trash directory is at:
/home/$USER/.local/share/Trash
If you delete something as root it is at:
/root/.local/share/Trash
The Trash directory is first created when a user deletes a file. Within Trash there are three subdirectories:
files – where deleted files are stored until the trash is emptied
info – stores information on where the files once were and when they were deleted
expunged – where files are briefly moved to when the trash is emptied (but may contain some owned by other users from directories you deleted).
Clear the rubbish bin from the command line
Normal user account
rm -rf ~/.local/share/Trash/files
Root user
sudo rm -rf /root/.local/share/Trash/files