Cleanup in-memory data from test that randomly causes other failures

[AlanCoding]

SUMMARY

Discovered in #15711 that did nothing at all related to this

this is a test ordering bug, because the test added to the registry.

This patch removes the test data from the registry.

ISSUE TYPE

• Bug, Docs Fix or other nominal change

COMPONENT NAME

• API

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[AlanCoding]

Reproduction of the failure before this patch

py.test awx/main/tests/functional/ -k "test_cloudforms_inventory_removal or test_default_cred_types"

this produces the following, consistent with the report.

    assert sorted(CredentialType.defaults.keys()) == sorted(
AssertionError: assert ['aim', 'aws'...c_token', ...] == ['aim', 'aws'...c_token', ...]
  
  At index 7 diff: 'cloudforms' != 'conjur'
  Left contains one more item: 'vmware'
  Use -v to get more diff