Revert "Voltage Control: initial voltage control for MSM S4-Pro SOC"

This reverts commit 37e7387b69113b3334a925a042936de5787fe53c.

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>

Conflicts:
	arch/arm/mach-msm/Kconfig
	arch/arm/mach-msm/acpuclock-krait.c