Use Resampler default constructor in VAD

webrtc/modules/audio_processing/vad/voice_activity_detector.cc

Index: webrtc/modules/audio_processing/vad/voice_activity_detector.cc
diff --git a/webrtc/modules/audio_processing/vad/voice_activity_detector.cc b/webrtc/modules/audio_processing/vad/voice_activity_detector.cc
index b39ed66b897eb84bfdb4ce8a61281b554729a99d..05995ed186bb54f31a74c189d149273d5b16c22b 100644
--- a/webrtc/modules/audio_processing/vad/voice_activity_detector.cc
+++ b/webrtc/modules/audio_processing/vad/voice_activity_detector.cc
@@ -28,8 +28,6 @@ const double kLowProbability = 0.01;
 
 VoiceActivityDetector::VoiceActivityDetector()
     : last_voice_probability_(kDefaultVoiceValue),
-      // Initialize to the most common resampling situation.
-      resampler_(kMaxLength, kLength10Ms, kNumChannels),
       standalone_vad_(StandaloneVad::Create()) {
 }