Hello Markus Berchtold,
Thank you for reporting this.
We are planning to hide the control in lower end editions. For now you can go to the toolbox configurations and remove this control manually.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items