For whatever reason you may have for deleting a Process, you can do so by clicking Delete.

However, you will not be able to remove a Process if the process you are trying to remove is referenced in other processes, used in a widget or table fill. In order to delete a Process, you must first delete all the references to it. If you try to remove a process that is referenced, you will receive a warning for each one. 

To delete the Job Hazard Assessment I would have to remove all references, table fills and widgets that it is associated with in the warnings.