Werk #8853: Cleanup ancient "(no status host)" choice from site config

Component	Setup
Title	Cleanup ancient "(no status host)" choice from site config
Date	Aug 14, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.0.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.6.0b6 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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