Currently, in the context of a Project_A containing a 'reference' Project_B:
When inspecting the read-only assets of Project_B, a Trashcan icon appears that when clicked presents a warning that it cannot be deleted.
See attached screenshots.

My preference: We likely should not show the Trashcan icon on Reference Project files since there are no circumstances where this functionality is offered for these external read-only file types.
Second option: grey it out with a tooltip that states that Reference Project items can't be removed from here.
Not really solving the issue, but at least removing one step: have the warning message appear immediately on click of the Trashcan icon, rather than after a confirmation popup.

Repro Steps:

1) Create a 'Project_A' Project featuring a MainPage.xaml.
2) Create a 'Project_B' Project featuring any custom content (creating a 'MyFirstPage.xaml' Page will do the trick)

3) Within the 'Project_A' Project, add the 'Project_B' Project as a Reference Project.
This will make Project_B and 'MyFirstPage.xaml' appear in the Assets Browser under the 'References' section.

4) Find, and hover over the 'MyFirstPage.xaml' file that exists as part of the 'Project_B' Project, and click on the Trashcan icon that appears in its row.

5) Confirm the intent to delete via the PopUp that appears asking to confirm.

Observe how a warning message appears stating that the deletion can't be completed.

Expected Results: Noesis Studio doesn't offer the ability to perform actions that can never be accomplished.