diff --git a/graphene_django/utils/testing.py b/graphene_django/utils/testing.py
index 3783c35..6b2d3e8 100644
--- a/graphene_django/utils/testing.py
+++ b/graphene_django/utils/testing.py
@@ -67,18 +67,11 @@ class GraphQLTestCase(TestCase):
 
     # URL to graphql endpoint
     GRAPHQL_URL = DEFAULT_GRAPHQL_URL
-    # Here you need to set your graphql schema for the tests
-    GRAPHQL_SCHEMA = None
 
     @classmethod
     def setUpClass(cls):
         super(GraphQLTestCase, cls).setUpClass()
 
-        if not cls.GRAPHQL_SCHEMA:
-            raise AttributeError(
-                "Variable GRAPHQL_SCHEMA not defined in GraphQLTestCase."
-            )
-
         cls._client = Client()
 
     def query(self, query, op_name=None, input_data=None, variables=None, headers=None):