Remove the different block lengths in ns_core

This CL has bit-exact output.

What it does:
  * Remove the blockLen10Ms, as it is hardcoded to be equal to blockLen.
  * This makes outLen to be always zero, so it can be removed too.
  * It also avoids the need to have an outBuf, because it is not used, so it is also removed
  * Replaced blockLen10Ms by blockLen everywhere, since they were hardcoded to be equal.
  * We don't need to check if outLen is zero, because it always is, so it was removed.
  * Of course, the outBuf needs no initial set or copying around, because it is not used.

BUG=webrtc:3811
R=bjornv@webrtc.org, kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/30539004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7297 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_processing/ns/include/noise_suppression.h

@@ -55,6 +55,7 @@ int WebRtcNs_Free(NsHandle* NS_inst);
  * Input:
  *      - NS_inst       : Instance that should be initialized
  *      - fs            : sampling frequency
+ *      - blockLenMs    : block length in ms
  *
  * Output:
  *      - NS_inst       : Initialized instance
@@ -62,7 +63,7 @@ int WebRtcNs_Free(NsHandle* NS_inst);
  * Return value         :  0 - Ok
  *                        -1 - Error
  */
-int WebRtcNs_Init(NsHandle* NS_inst, uint32_t fs);
+int WebRtcNs_Init(NsHandle* NS_inst, uint32_t fs, int blockLenMs);
 
 /*
  * This changes the aggressiveness of the noise suppression method.