Revert "Added ACM_dump protobuf, class for reading/writing and unittest."

webrtc/modules/audio_coding/BUILD.gn

Index: webrtc/modules/audio_coding/BUILD.gn
diff --git a/webrtc/modules/audio_coding/BUILD.gn b/webrtc/modules/audio_coding/BUILD.gn
index 6185d7a5d832f53aa63fb8987e5b58e3768967c9..7b7acd34d8b93e6c3b3dd50e6f3dc366e26b99ab 100644
--- a/webrtc/modules/audio_coding/BUILD.gn
+++ b/webrtc/modules/audio_coding/BUILD.gn
@@ -7,7 +7,6 @@
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/arm.gni")
-import("//third_party/protobuf/proto_library.gni")
 import("../../build/webrtc.gni")
 
 config("audio_coding_config") {
@@ -80,30 +79,6 @@ source_set("audio_coding") {
   }
 }
 
-proto_library("acm_dump_proto") {
-  sources = [
-    "main/acm2/dump.proto",
-  ]
-  proto_out_dir = "webrtc/audio_coding"
-}
-
-source_set("acm_dump") {
-  sources = [
-    "main/acm2/acm_dump.cc",
-    "main/acm2/acm_dump.h",
-  ]
-
-  defines = []
-
-  deps = [
-    ":acm_dump_proto",
-  ]
-
-  if (rtc_enable_protobuf) {
-    defines += [ "RTC_AUDIOCODING_DEBUG_DUMP" ]
-  }
-}
-
 source_set("audio_decoder_interface") {
   sources = [
     "codecs/audio_decoder.cc",