You should be able to find a "Deinstall Kernel-Power" application in your apps menu. As far as I know this is the only "supported" way of removing kernel-power (never tried it though). After that (possibly with a reboot involved), you can install it again. But I still don't understand why you need to uninstall it (or reinstall it). What exactly is the problem you have? The kernel-power file has the defaults that are passed to kernel-config. The pmconfig file has parameters that are used by the maemo power management (not sure exactly how these map to kernel parameters). They do overlap a bit, but AFAIK kernel-power is loaded after pmconfig, so it takes precedence over pmconfig.