Revert "ARM: dts: msm: Add iommu actlr settings for sdm845"

This reverts commit 9a169a27.

The driver code supporting these settings was reverted due to stability
issues. Remove the device-tree properties as well.

Change-Id: Id460e50aa72a876f575280c0c4b82fd56fb65534
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>