Fixed delete button on namaespace summary screen.
Fixed delete button on namaespace summary screen.

Delete namespace button on namespace summary screen was throwing an error, fixed code to delete correct record.
(transferred from ManageIQ/manageiq@2b540bd945dcd1a3029125b051b87f4ca5f9434d)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic