ARM: dts: msm: Remove the pm8950 and pmi8950 DT files

Remove the pm8950 and pmi8950 device tree files from the
arm32 bit folder as these files are not used any where.

Change-Id: Ied5b3c1c18a84d4ea11e3de2d0d2f018187d221b
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>