Remove runtime NEON detection

webrtc/modules/audio_processing/aecm/aecm_core.cc

Index: webrtc/modules/audio_processing/aecm/aecm_core.cc
diff --git a/webrtc/modules/audio_processing/aecm/aecm_core.cc b/webrtc/modules/audio_processing/aecm/aecm_core.cc
index efaa7f0a8f36cff7f72c584edc6cf36346d1c4f9..a17220dbd76b11a678a1dfa4a811f5ec12561029 100644
--- a/webrtc/modules/audio_processing/aecm/aecm_core.cc
+++ b/webrtc/modules/audio_processing/aecm/aecm_core.cc
@@ -365,7 +365,7 @@ static void ResetAdaptiveChannelC(AecmCore* aecm) {
 }
 
 // Initialize function pointers for ARM Neon platform.
-#if (defined WEBRTC_DETECT_NEON || defined WEBRTC_HAS_NEON)
+#if defined(WEBRTC_HAS_NEON)
 static void WebRtcAecm_InitNeon(void)
 {
   WebRtcAecm_StoreAdaptiveChannel = WebRtcAecm_StoreAdaptiveChannelNeon;
@@ -512,13 +512,7 @@ int WebRtcAecm_InitCore(AecmCore* const aecm, int samplingFreq) {
     WebRtcAecm_StoreAdaptiveChannel = StoreAdaptiveChannelC;
     WebRtcAecm_ResetAdaptiveChannel = ResetAdaptiveChannelC;
 
-#ifdef WEBRTC_DETECT_NEON
-    uint64_t features = WebRtc_GetCPUFeaturesARM();
-    if ((features & kCPUFeatureNEON) != 0)
-    {
-      WebRtcAecm_InitNeon();
-    }
-#elif defined(WEBRTC_HAS_NEON)
+#if defined(WEBRTC_HAS_NEON)
     WebRtcAecm_InitNeon();
 #endif