Removed deprecated aliases in django.db.models.

django/db/models/__init__.py

 from functools import wraps
-import sys
-import warnings
 
 from django.core.exceptions import ObjectDoesNotExist, ImproperlyConfigured  # NOQA
 from django.db.models.query import Q, QuerySet, Prefetch  # NOQA
@@ -19,7 +17,6 @@ from django.db.models.deletion import (  # NOQA
     CASCADE, PROTECT, SET, SET_NULL, SET_DEFAULT, DO_NOTHING, ProtectedError)
 from django.db.models.lookups import Lookup, Transform  # NOQA
 from django.db.models import signals  # NOQA
-from django.utils.deprecation import RemovedInDjango19Warning
 
 
 def permalink(func):
@@ -39,26 +36,3 @@ def permalink(func):
         bits = func(*args, **kwargs)
         return reverse(bits[0], None, *bits[1:3])
     return inner
-
-
-# Deprecated aliases for functions were exposed in this module.
-
-def make_alias(function_name):
-    # Close function_name.
-    def alias(*args, **kwargs):
-        warnings.warn(
-            "django.db.models.%s is deprecated." % function_name,
-            RemovedInDjango19Warning, stacklevel=2)
-        # This raises a second warning.
-        from . import loading
-        return getattr(loading, function_name)(*args, **kwargs)
-    alias.__name__ = function_name
-    return alias
-
-this_module = sys.modules['django.db.models']
-
-for function_name in ('get_apps', 'get_app_path', 'get_app_paths', 'get_app',
-                      'get_models', 'get_model', 'register_models'):
-    setattr(this_module, function_name, make_alias(function_name))
-
-del this_module, make_alias, function_name