RTC Remove / Disable Work Item
Accepted answer
You ask for removing a work item type from view (and not a work item as suggested in the question).
I am not aware of a feature to hide a work item type. You can archive/delete a work item type.
The concept of Admins is unclear and does not make sense in this context. There are certain concepts such as JazzAdmin or JazzProjectAdmin repository role. These have no impact on the UI, except the first one allows to see all data, even data that would otherwise be hidden.
You can use roles in the project area to allow/prevent creating/modifying work items of a specific type.
You can use roles in the project area to allow/prevent creating/modifying work items of a specific type.