Function sceUtilityUnloadUsbModule 

pub unsafe extern "C" fn sceUtilityUnloadUsbModule(
    module: c_int,
) -> c_int

Unload a usb module (PRX) from user mode. Available on firmware 2.70 and higher only.

@param module - module number to be unloaded @return 0 on success, < 0 on error