fix expected color fixture

tests/functional/adapter/test_constraints.py

@@ -284,9 +284,4 @@ def models(self):
             "constraints_schema.yml": constraints_yml,
         }
 
-    # On Spark/Databricks, constraints are applied *after* the table is replaced.
-    # We don't have any way to "rollback" the table to its previous happy state.
-    # So the 'color' column will be updated to 'red', instead of 'blue'.
-    @pytest.fixture(scope="class")
-    def expected_color(self):
-        return "red"
+    # The insert never gets applied so for this materialization the color stays blue