IMPOSSIBLE TO DELETE LINKING PROJECTs

[wf2two]

Hello Everibody

sorry for my brokend English i am French

I have 3 projects imbricated with  links

first  i  break the links and i record  each project  and i try to delete  impossible

second i remove  in each project  all esquiss design manufacture each project are empty  same thing impossible to delete

i put  this 3 empty project inside a file i call garbidge but i am stuck  

https://a360.co/35nVoeP

https://a360.co/3maB3Ar

https://a360.co/2HpQpSL

a great thank you in advance  for your help to delete   this 3 projects  may be somebody belong autodesk

thank you