how can I remove the irda module?

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hi, guys,
Now I am developing a device based on windows mobile 5 aku3.0. In this
project, it has no irda module. But default the irda support is enabled. if I
want to remove it. how can i do?
I checked the sysgen in wpc.bat, I found the sysgen_irda equal 1 and I
set the sysgen in my BSP equal null. But it do not work, maybe my setting is
not in proper position. So can anyone tell me how I should do? That is, how I
remove the irda sysgen setting?
I am looking forward to your help!!
Thanks!

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