While it is not directly an answer to the initial question it is questionable to disable such checks in general. See the following postings for more background:
- How to configure OpenVAS where it is NOT locking out "root" accounts? - #3 by cfi
- Turn off testing default login/brufe force attacks - #2 by cfi - Scanning / scan configuration - Greenbone Community Forum
- Specify how many attempts of root login per host? - #3 by ckuerste - Vulnerability Tests - Greenbone Community Forum