remove custom_virtualenv support from the AWX collection and docs

awx_collection/test/awx/test_organization.py

@@ -20,7 +20,6 @@ def test_create_organization(run_module, admin_user):
         'validate_certs': None,
         'tower_oauthtoken': None,
         'tower_config_file': None,
-        'custom_virtualenv': None
     }
 
     result = run_module('tower_organization', module_args, admin_user)
@@ -37,24 +36,3 @@ def test_create_organization(run_module, admin_user):
     }
 
     assert org.description == 'barfoo'
-
-
-@pytest.mark.django_db
-def test_create_organization_with_venv(run_module, admin_user, mocker):
-    path = '/var/lib/awx/venv/custom-venv/foobar13489435/'
-    with mocker.patch('awx.main.models.mixins.get_custom_venv_choices', return_value=[path]):
-        result = run_module('tower_organization', {
-            'name': 'foo',
-            'custom_virtualenv': path,
-            'state': 'present'
-        }, admin_user)
-    assert result.pop('changed'), result
-
-    org = Organization.objects.get(name='foo')
-    result.pop('invocation')
-    assert result == {
-        "name": "foo",
-        "id": org.id
-    }
-
-    assert org.custom_virtualenv == path