cpupower tool: remove use of undefined variables from the clean target of the top makefile
cpupower tool: remove use of undefined variables from the clean target of the top makefile

UTIL_BINS and IDLE_OBJS variables are not defined at all, so
there's no need to remove their content from the 'clean' target.

Signed-off-by: Franck Bui-Huu <e8d36543077b1c46c7df30e40a2816bc8ffc51e1@gmail.com>
Signed-off-by: Dominik Brodowski <ba324ca7b1c77fc20bb970d5aff6eea9377918a5@dominikbrodowski.net>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas