Werk #7449: Fix Remove spurious perfdata in IF checks

Component	Checks & agents
Title	Fix Remove spurious perfdata in IF checks
Date	Aug 5, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.0.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0b5 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.5.0p22 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Remove repeated in & out perf data values Remove perfdata for averaged average

To the list of all Werks