ARM: dts: msm: camera: Remove dts entries for vreg-type

Entries of the type vreg-type are used only
for custom voltage regulators.

Change-Id: I37b0fbf8b9e1962a992485c9c8e154d09f58e11f
Signed-off-by: Deepak Kaushal <dkaushal@codeaurora.org>