Remove select Object from DocApp/Type

“Remove select Object from DocApp/Type” removes object from the docapp not from docbase, if you want to remove objects from docbase the in DAB, checkout docapp

Select the object, Go to Menu item Edit  Delete object(s) from Docbase.

Or

TBO objects reside in the docbase in the location "/System/Modules/TBO" with the object type "dmc_module". You can uninstall the TBO’s by destroying your custom TBO objects from docbase.

select r_object_id, r_object_type from dm_sysobject where folder('/System/Modules/TBO');