No host check retry, please

[jfrickson]

In discussion with tmcnag and scottwilkerson, we decided that this change has potential wide-ranging effects, so it should go in (if at all) with a major release, such as 5.0. The issue will remain open, but the pull request has been closed.

[tmcdonald]

Closing thread now. See my note here for clarification: https://github.com/NagiosEnterprises/na ... -125286286