[Closed] Script that cleans the motion mixer

Hi, on other forums i have seen people mention a script that removes motion mixer tracks when your max file is bloated but i cant find the script anywhere. the one on the autodesk site that they have provided to fix the issue contains this

for i = 1 to theMixer.nummaxMixers() do
(
    theMixer.removemaxMixer 1 false 1

)

But this doesnt seem to remove the biped tracks in my test model
Is anyone aware of a script or snippet to help me?
Thanks
Jack