ARM: shmobile: ape6evm: Remove duplicate CPUFreq bits

The CPUFreq platform device is already registered by
shmobile_init_late(), so get rid of ape6evm specific bits.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>