ARM: dts: msm: Remove not used low temperature thermal zones for SA8155

The low temperature monitoring sensors are reduced to 4 for all SM8150
variants. Cleanup not used low temperature thermal zone rules for
SA8155.

Change-Id: I95984bee43d515d2cad7497b363f30ac1cdf3e3f
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>