Delete Admin password when upgrade

manifest.json

@@ -71,17 +71,6 @@
                 "choices": ["Yes", "No"],
                 "default": "No"
             }
-        ],
-        "upgrade" : [
-            { 
-                "name": "password",
-                "type": "password",
-                "ask": {
-                    "en": "Enter a password to access the admin panel, this is required only if you upgrade from 1.0",
-                    "fr": "Entrer un mot de passe pour accéder au tableau d'administration, ce n'est nécessaire qu'en cas d'upgrade depuis la version 1.0"
-                },
-                "example": "AveryStrongPassword"
-            },
         ]
     }
 }