Revert 6860 "SSE2 version of SubbandCoherence()"
Revert 6860 "SSE2 version of SubbandCoherence()"

> SSE2 version of SubbandCoherence()
> 
> The performance gain on a x86 laptop (Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz)
> reported by audioproc is ~3.3%
> 
> The output is bit exact.
> 
> R=bjornv@webrtc.org, cd@webrtc.org
> 
> Review URL: https://webrtc-codereview.appspot.com/18779004
> 
> Patch from Scott LaVarnway <slavarnw@gmail.com>.

TBR=bjornv@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/16289004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@6861 4adac7df-926f-26a2-2b94-8c16560cd09d

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