Goal: 

    parser.add_argument(
        '--cleanup',
        help="Cleanup unconfigured interfaces.",

• When remove_config become fully supported, the role of existing "–cleanup" flag becomes redundant
• So, we can update the usage for "internal/developer" USE_ONLY

Acceptance Criteria:

• Verify help of "–cleanup" is modified
• Verify all user facing documents are updated
• Create Jira tp track ansible updates