ARM: dts: msm: Remove sleep status nodes from DT

Sleep status driver is used to check the power state of the
CPUs when CPUs are hotplugged. This functionality is not
needed after power driver move to PSCI framework. Remove
these nodes from DT file.

Change-Id: I1224372afcc7b92be8426084b9b1418f4a380bbd
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>