Checkmk Werk 14779: Remove less useful graphs

ID: 14779 Title: Remove less useful graphs Component: Setup Level: 1 Class: New feature Version: 2.2.0i1 This removes some of the less useful graphs introduced in Werks 14777 and 14778 from the OMD performance page. The corresponding metrics are still available over Livestatus. The removed graphs are: Number of performance data received; Number of metrics received; Performance data loss for "connection"; Bytes sent to the "connection", where "connection" is either RRD, InfluxDB or Carbon.