Use new plot helper method to clear artifact tooltips when reloading existing panels with new data
Use new plot helper method to clear artifact tooltips when reloading
existing panels with new data

(h/t @welchr for bug report)

Signed-off-by: Andy Boughton <5e68ec36f5178b44dbce03ea5a35443829b369bc@gmail.com>

statgen/locuszoom,statgen/locuszoom,statgen/locuszoom