Revert "arm: dts: msm: Add overlay/non-overlay support for SDM450 no-pmi config"

This reverts commit 5c526199.

Change-Id: I2d7c069eb9a3d7a10fc4c21779c6fe2e434f643e
Signed-off-by: Kavya Nunna <knunna@codeaurora.org>