ACLs --trying to delete the widget file

https://www.thomaskeller.biz/blog/2011/06/04/acls-on-mac-os-x/

Last login: Fri Apr  8 18:54:58 on console
DC_iMAC:~ MAC_at_home$ pwd
/Users/MAC_at_home
DC_iMAC:~ MAC_at_home$ cd .Trash
DC_iMAC:.Trash MAC_at_home$ ls -le .
total 0
drwxrwxrwx@ 3 root  admin  102  3 Apr 22:44 Web Clip.wdgt
 0: user:MAC_at_home allow delete
DC_iMAC:.Trash MAC_at_home$ chmod +a 'MAC_at_home allow read,write,delete,add_file,add_subdirectory,file_inherit,directory_inherit' 'Web Clip.wdgt'
chmod: Failed to set ACL on file 'Web Clip.wdgt': Operation not permitted
DC_iMAC:.Trash MAC_at_home$ sudo chmod +a 'MAC_at_home allow read,write,delete,add_file,add_subdirectory,file_inherit,directory_inherit' 'Web Clip.wdgt'
Password:
DC_iMAC:.Trash MAC_at_home$














None of the above seemed to work.

DC_iMAC:.Trash MAC_at_home$ sudo chmod -N 'Web Clip.wdgt'Password:
DC_iMAC:.Trash MAC_at_home$


this was supposed to remove all ACL's associated with the directory...

DC_iMAC:.Trash MAC_at_home$ ls -le .total 0
drwxrwxrwx@ 3 root  admin  102  3 Apr 22:44 Web Clip.wdgt
DC_iMAC:.Trash MAC_at_home$


but I still could not erase the file.