Revert "DCE SimplifyAlwaysThrowing optimizations"

This reverts commit 298112a02cf095d6477af382d12efcaa16d6d203.

Reason for revert: Causes failures like https://ci.chromium.org/ui/p/art/builders/ci/bullhead-armv7-gcstress-ndebug/1901/overview

Change-Id: I972a91b6537e7c4812bf8d0ccbbcba38811d0970
6 files changed