diff --git a/modoboa/lib/fixtures/demo.json b/modoboa/lib/fixtures/demo.json
deleted file mode 100644
index 737dff0b0..000000000
--- a/modoboa/lib/fixtures/demo.json
+++ /dev/null
@@ -1,234 +0,0 @@
-[
-    {
-        "pk": 2,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "core.PASSWORD_SCHEME",
-            "value": "crypt"
-        }
-    },
-    {
-        "pk": 3,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "core.ITEMS_PER_PAGE",
-            "value": "30"
-        }
-    },
-    {
-        "pk": 4,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "core.DEFAULT_TOP_REDIRECTION",
-            "value": "user"
-        }
-    },
-    {
-        "pk": 8,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "core.AUTHENTICATION_TYPE",
-            "value": "local"
-        }
-    },
-    {
-        "pk": 9,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "admin.MAILBOXES_OWNER",
-            "value": "vmail"
-        }
-    },
-    {
-        "pk": 13,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis_quarantine.USER_CAN_RELEASE",
-            "value": "no"
-        }
-    },
-    {
-        "pk": 14,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis_quarantine.CHECK_REQUESTS_INTERVAL",
-            "value": "30"
-        }
-    },
-    {
-        "pk": 15,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis_quarantine.AM_PDP_PORT",
-            "value": "9998"
-        }
-    },
-    {
-        "pk": 16,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.IMAP_SECURED",
-            "value": "no"
-        }
-    },
-    {
-        "pk": 17,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "postfix_autoreply.AUTOREPLIES_TIMEOUT",
-            "value": "86400"
-        }
-    },
-    {
-        "pk": 18,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "sievefilters.AUTHENTICATION_MECH",
-            "value": "PLAIN"
-        }
-    },
-    {
-        "pk": 19,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis.AM_PDP_SOCKET",
-            "value": "/var/amavis/amavisd.sock"
-        }
-    },
-    {
-        "pk": 20,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis.AM_PDP_MODE",
-            "value": "inet"
-        }
-    },
-    {
-        "pk": 21,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis.SELF_SERVICE",
-            "value": "no"
-        }
-    },
-    {
-        "pk": 22,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.IMAP_PORT",
-            "value": "143"
-        }
-    },
-    {
-        "pk": 23,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.SMTP_SECURED_MODE",
-            "value": "none"
-        }
-    },
-    {
-        "pk": 24,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "sievefilters.SERVER",
-            "value": "127.0.0.1"
-        }
-    },
-    {
-        "pk": 25,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.SMTP_SERVER",
-            "value": "127.0.0.1"
-        }
-    },
-    {
-        "pk": 26,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.SMTP_AUTHENTICATION",
-            "value": "no"
-        }
-    },
-    {
-        "pk": 27,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.MAX_ATTACHMENT_SIZE",
-            "value": "512K"
-        }
-    },
-    {
-        "pk": 28,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "stats.RRD_ROOTDIR",
-            "value": "/srv/www/modoboa/tmp"
-        }
-    },
-    {
-        "pk": 29,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis.RELEASED_MSGS_CLEANUP",
-            "value": "no"
-        }
-    },
-    {
-        "pk": 30,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis.MAX_MESSAGES_AGE",
-            "value": "14"
-        }
-    },
-    {
-        "pk": 31,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.SMTP_PORT",
-            "value": "25"
-        }
-    },
-    {
-        "pk": 33,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "webmail.IMAP_SERVER",
-            "value": "127.0.0.1"
-        }
-    },
-    {
-        "pk": 34,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "sievefilters.STARTTLS",
-            "value": "yes"
-        }
-    },
-    {
-        "pk": 35,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "sievefilters.PORT",
-            "value": "2000"
-        }
-    },
-    {
-        "pk": 36,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "amavis.AM_PDP_HOST",
-            "value": "localhost"
-        }
-    },
-    {
-        "pk": 37,
-        "model": "lib.parameter",
-        "fields": {
-            "name": "stats.LOGFILE",
-            "value": "/var/log/mail.log"
-        }
-    }
-]