deleting an Incident from solution manager 7.1

Hello all

            I had configured service desk in solution manager 7.1 sp1, it works fine,

            but in the configuration process and in the test process a lot of "test incidents" have been created.

           I want to delete these incidents but could not find a way to do so.

          and crm_order_delete also does not exist in 7.1.

any suggestions

thank you