Make AudioVector::operator[] inline and modify index calculation

webrtc/modules/audio_coding/neteq/audio_vector.cc

Index: webrtc/modules/audio_coding/neteq/audio_vector.cc
diff --git a/webrtc/modules/audio_coding/neteq/audio_vector.cc b/webrtc/modules/audio_coding/neteq/audio_vector.cc
index ea737a5542425545b70769f734e7f48406412454..5cc1a4496684e7f29c186ba8b86398f2ebd5da16 100644
--- a/webrtc/modules/audio_coding/neteq/audio_vector.cc
+++ b/webrtc/modules/audio_coding/neteq/audio_vector.cc
@@ -284,14 +284,6 @@ bool AudioVector::Empty() const {
   return begin_index_ == end_index_;
 }
 
-const int16_t& AudioVector::operator[](size_t index) const {
-  return array_[(begin_index_ + index) % capacity_];
-}
-
-int16_t& AudioVector::operator[](size_t index) {
-  return array_[(begin_index_ + index) % capacity_];
-}
-
 void AudioVector::Reserve(size_t n) {
   if (capacity_ > n)
     return;