Can't delete Statuses or contexts

* Version of the plugin : 1.6.2


* Version of your GLPI : 9.5.11


* Steps to reproduce (which actions have you made) : 
* I added a few statuses.
* Now I can't delete them, The delete option is not offered to me at all. (I am logged in as Super Admin)


* Expected result :
I can delete statuses

* Actual result :
Can't delete statuses or contexts



