Checkmk Werk 12218: Remove custom graph and combined graph option from CRE dashboards

ID: 12218 Title: Remove custom graph and combined graph option from CRE dashboards Component: Multisite Level: 1 Class: New feature Version: 2.1.0i1 The options in the "Add" menu of dashboards related in an error, because this features are not available in CRE. Also the "Graphs" topic in the main menu section "Customize" was visible, even if empty.