I am afraid that this functionality is not supported out of the box by Kendo PanelBar - the component does not support binding to remove data nor drag n drop reordering.
If you would like to see such functionality added in one of our future releases, I suggest you to share your idea at Kendo UI Feedback portal. In this way the other users will be able to vote for or comment it. If it turns out to be popular we will consider adding it to the suite.
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