In MDL-82259 a new action menu for subsection module has been added. This new action menu is a mix of section and module options. It adds 'Delete' option to the menu.

'Delete activity' dialogue should be reviewed and used in all cases where a subsection is deleted.

Current 'Delete activity' dialogue:

As all delegated subsection will have a name (the name of the delegator subsection activity) will always considered a "non-empty" section, so will always need confirmation.