diff --git a/django/test/runner.py b/django/test/runner.py
index 672c98b8cd..0975a8c8c0 100644
--- a/django/test/runner.py
+++ b/django/test/runner.py
@@ -6,7 +6,6 @@ import os
 import pickle
 import textwrap
 import unittest
-import warnings
 from importlib import import_module
 from io import StringIO
 
@@ -18,7 +17,6 @@ from django.test.utils import (
     teardown_databases as _teardown_databases, teardown_test_environment,
 )
 from django.utils.datastructures import OrderedSet
-from django.utils.deprecation import RemovedInDjango21Warning
 
 try:
     import tblib.pickling_support
@@ -683,16 +681,6 @@ def partition_suite_by_case(suite):
     return groups
 
 
-def setup_databases(*args, **kwargs):
-    warnings.warn(
-        '`django.test.runner.setup_databases()` has moved to '
-        '`django.test.utils.setup_databases()`.',
-        RemovedInDjango21Warning,
-        stacklevel=2,
-    )
-    return _setup_databases(*args, **kwargs)
-
-
 def filter_tests_by_tags(suite, tags, exclude_tags):
     suite_class = type(suite)
     filtered_suite = suite_class()
diff --git a/docs/releases/2.1.txt b/docs/releases/2.1.txt
index e70e3fa591..560eee4fd3 100644
--- a/docs/releases/2.1.txt
+++ b/docs/releases/2.1.txt
@@ -232,3 +232,5 @@ how to remove usage of these features.
 
 * The ``extra_context`` parameter of ``contrib.auth.views.logout_then_login()``
   is removed.
+
+* ``django.test.runner.setup_databases()`` is removed.