python3Packages.django-extensions: Fix tests on darwin

pkgs/development/python-modules/django-extensions/default.nix

@@ -15,7 +15,6 @@
   mock,
   pip,
   postgresql,
-  postgresqlTestHook,
   pygments,
   pytestCheckHook,
   pytest-cov-stub,
@@ -51,7 +50,6 @@ buildPythonPackage rec {
     mock
     pip
     postgresql
-    postgresqlTestHook
     pygments # not explicitly declared in setup.py, but some tests require it
     pytest-cov-stub
     pytest-django
@@ -61,13 +59,6 @@ buildPythonPackage rec {
     werkzeug
   ];
 
-  env = {
-    postgresqlEnableTCP = 1;
-    PGUSER = "postgres";
-    PGPASSWORD = "postgres";
-    PGDATABASE = "django_extensions_test";
-  };
-
   disabledTestPaths = [
     # https://github.com/django-extensions/django-extensions/issues/1871
     "tests/test_dumpscript.py"