To check the trap status on the controller:
# en
> show snmp trap-list
To disable the SNMP traps you don't want to see:
# conf t
# snmp-server trap disable (trap_name)
# snmp-server trap disable (trap_name_2)
ctrl+z
# write mem
To enable a trap:
# conf t
# snmp-server trap enable (trap_name)
# snmp-server trap enable (trap_name_2)
ctrl+z
# write mem
*Note: when enabling/disabling traps, it's 1 trap per entry line, there's no easy way to perform this in bulk. I usually write the list out in notepad (without #s) and then copy / paste into SSH/telnet command line.