ARM: dts: msm: Remove Gfx warm to normal temperature monitor

Remove GFX temperature monitoring for warm to normal
temperature transition since RPM is not doing any
action during this transition. Moreover it will
reduce unnecessary wakeup of system due to low
warm temperature monitoring.

CRs-fixed: 703511
Change-Id: I5143967caa9b2a2ba24fda2f69c4dd095341cf34
Signed-off-by: Shiju Mathew <shijum@codeaurora.org>