compiler_wrapper: Stop disabling two warnings.

Chrome OS code now is clean of following warnings:
"-Wreorder-init-list" and "-return-stack-address" so
stop disabling them.

BUG=chromium:1057384
TEST=warnings tested by CL:1898670

Change-Id: I568cf93a9e836ba936ea976312e9a78b5c473157
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2081707
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: George Burgess <gbiv@chromium.org>
40 files changed