How to delete custom reports

[Daniel Frerejacque]

Gnucash 2.0.5 from r15617 on 2007-02-19

I made some custom reports (graphs) installed
on the report on the report menus, last item -> custom reports submenus
of the reports.

I did'nt find any mean to remove those custom reports
(not in the doc)

maybe somebody knows how to remove them??

Thanks

Daniel Frerejacque