A little late, but you can do it if you restart the game with the proper command lines (' +set cheats 1 +set ui_console 1 +set thereisnomonkey 1') while console is disabled in the options menu (options/advanced/uncheck the box next to 'console') and start a new mission as it doesn't work on saved games.
I'm still curious if there's a way to run the game with cheats on, but without the annoying 'Axis NPC Allies NPC' text on screen. I didn't enable '+set ui_console 1' when I was using cheats, so if anyone did then you may also need to reset this value to '0' on your next restart. This turns off cheats, but it also turns off that annoying text that kept appearing after previously using cheats. To make the annoying text go away (with cheats off), I restarted the game with the command line '+set developer 0 +set thereisnomonkey 0 +set cheats 0'.
Fretka2: Well, I figured out how remove the text (without cheats) on my own.
