According to the docs, SNMP traps can be configured without Event Management:
The sys_ui_section record contains a reference to an Event Management table that doesn't exist, breaking the form, although they are supposed to be independent.
1) Create a new instance (OOTB) or log-in to an instance that doesn't have 'Event Management/ITOM' installed
2) Navigate to MID Server -> MID SNMP Trap Listener
3) Click 'New' UI Action
4) Note that JS does not load, page does not respond correctly.