Checkmk Werk 12855: Raw Edition: Remove artifacts of old CRE graphing GUI

ID: 12855 Title: Raw Edition: Remove artifacts of old CRE graphing GUI Component: Multisite Level: 1 Class: Bug fix Version: 2.1.0i1 With werk #10714 we replaced the old pnp4nagios based graphing system of the Checkmk Raw Edition. This change now removes some files that were left over from the previous graphing system which were not used anymore since 2.0.