Remove runtime NEON detection

webrtc/modules/audio_coding/codecs/isac/fix/source/pitch_estimator_c.c

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 39 matching lines @@
     *logcorQ8 = 0;
   }
 
 
   for (k = 1; k < PITCH_LAG_SPAN2; k++) {
     inptr = &in[k];
     ysum32 -= in[k - 1] * in[k - 1] >> scaling;
     ysum32 += in[PITCH_CORR_LEN2 + k - 1] * in[PITCH_CORR_LEN2 + k - 1] >>
         scaling;
 
-    // TODO(zhongwei.yao): Move this function into a separate NEON code file so
-    // that WEBRTC_DETECT_NEON could take advantage of it.
 #ifdef WEBRTC_HAS_NEON
     {
       int32_t vbuff[4];
       int32x4_t int_32x4_sum = vmovq_n_s32(0);
       // Can't shift a Neon register to right with a non-constant shift value.
       int32x4_t int_32x4_scale = vdupq_n_s32(-scaling);
       // Assert a codition used in loop unrolling at compile-time.
       COMPILE_ASSERT(PITCH_CORR_LEN2 %4 == 0);
 
       for (n = 0; n < PITCH_CORR_LEN2; n += 4) {
@@ skipping 33 matching lines @@
       if (lcs > (lys + oneQ8)) {          // csum/sqrt(ysum) > 2
         *logcorQ8 = lcs - lys;            // log2(csum/sqrt(ysum))
       } else {
         *logcorQ8 = oneQ8;                // 1.00
       }
     } else {
       *logcorQ8 = 0;
     }
   }
 }