Remove custom user app from sandbox

This is to keep the sandbox as vanilla as possible, as it's the
environment that migrations should be built against.

sites/sandbox/apps/user/models.py

+"""
+Sample user/profile models for testing.  These aren't enabled by default in the
+sandbox
+"""
+
 from django.db import models
 from django.utils import timezone
 

sites/sandbox/settings.py

     'south',
     'rosetta',          # For i18n testing
     'compressor',
-    'apps.user',        # For profile testing
     'apps.gateway',     # For allowing dashboard access
 ]
 from oscar import get_core_apps
     },
 }
 
-AUTH_PROFILE_MODULE = 'user.Profile'
-
 # =============
 # Debug Toolbar
 # =============