Don't set -mno-avx

There is no point in intentionally disabling this feature; it
isn't enabled by default by the compiler - and if it were to be
enabled by default (if the toolchain baseline includes it, because
it can be expected to be supported everywhere) there would be no
reason to disable it.

Change-Id: I67019eea63c4fb7183d9e47cf16bc8485022fef2
4 files changed