deleting charts from a personal dashboard

[R Hicks]

I want to delete all my charts from my personal dashboard so that I can start again.

Most have been easy to remove as I have gone into the settings of each view and simply deleted the chart.  However, I now have no personal views that have a chart marker against them to the left of the view name, and only one shared view which does but which is not shown. BUT I still have two charts on my dashboard which look like they were created from the same 'view' at some point.  I cannot see anyway to delete them, they need to be deleted as they do not show data of any value. Can anyone please advise.  I am looking to do a workshop on personal dashboards shortly and I need to be able to undo any of their rookie errors like these.