How to reset or disable lavfi-complex in script

[JimPancakes]

I used this line of code in a script:

mp.set_property('lavfi-complex', '[vid1] [vid2] hstack [vo1] ; [vid3] [vid4] hstack [vo2] ; [vo1] [vo2] vstack [vo]')

It works flawlessly but I also need a way to set it back to normal. Any way I can do that through code as well?

[guidocella]

mp.set_property('lavfi-complex', '')