Remove nowhere used symbol CONFIG_SYS_CLKS_IN_HZ

include/configs/ADNPESC1.h

include/configs/B2.h

include/configs/DK1C20.h

include/configs/DK1S10.h

include/configs/EXBITGEN.h

include/configs/SMN42.h

include/configs/SX1.h

include/configs/VCMA9.h

include/configs/W7OLMC.h

include/configs/W7OLMG.h

include/configs/actux1.h

include/configs/actux2.h

include/configs/actux3.h

include/configs/actux4.h

include/configs/apollon.h

include/configs/armadillo.h

include/configs/assabet.h

include/configs/cerf250.h

include/configs/cm4008.h

include/configs/cm41xx.h