Remove HAVE_WEBRTC_VOICE.

Appears not used anymore.

Bug: none
Change-Id: Ic2238e6ad3d9917208bdb4a101f1ce254b1272ac
Reviewed-on: https://webrtc-review.googlesource.com/c/120963
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26578}

BUILD.gn

@@ -249,7 +249,6 @@ config("common_config") {
       # TODO(kjellander): Cleanup unused ones and move defines closer to the
       # source when webrtc:4256 is completed.
       "HAVE_WEBRTC_VIDEO",
-      "HAVE_WEBRTC_VOICE",
       "LOGGING_INSIDE_WEBRTC",
     ]
   } else {

media/BUILD.gn

@@ -20,10 +20,7 @@ group("media") {
 }
 
 config("rtc_media_defines_config") {
-  defines = [
-    "HAVE_WEBRTC_VIDEO",
-    "HAVE_WEBRTC_VOICE",
-  ]
+  defines = [ "HAVE_WEBRTC_VIDEO" ]
 }
 
 rtc_source_set("rtc_h264_profile_id") {

media/engine/webrtc_voice_engine.cc

@@ -8,8 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifdef HAVE_WEBRTC_VOICE
-
 #include "media/engine/webrtc_voice_engine.h"
 
 #include <algorithm>
@@ -2286,5 +2284,3 @@ bool WebRtcVoiceMediaChannel::MaybeDeregisterUnsignaledRecvStream(
   return false;
 }
 }  // namespace cricket
-
-#endif  // HAVE_WEBRTC_VOICE