Revert of Adding debug dump to audio network adaptor.

webrtc/modules/audio_coding/audio_network_adaptor/debug_dump.proto

Index: webrtc/modules/audio_coding/audio_network_adaptor/debug_dump.proto
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/debug_dump.proto b/webrtc/modules/audio_coding/audio_network_adaptor/debug_dump.proto
deleted file mode 100644
index f4252449987a341f2ceae6ecc81297f81b2a2923..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_coding/audio_network_adaptor/debug_dump.proto
+++ /dev/null
@@ -1,30 +0,0 @@
-syntax = "proto2";
-option optimize_for = LITE_RUNTIME;
-package webrtc.audio_network_adaptor.debug_dump;
-
-message NetworkMetrics {
-  optional int32 uplink_bandwidth_bps = 1;
-  optional float uplink_packet_loss_fraction = 2;
-  optional int32 target_audio_bitrate_bps = 3;
-  optional int32 rtt_ms = 4;
-}
-
-message EncoderRuntimeConfig {
-  optional int32 bitrate_bps = 1;
-  optional int32 frame_length_ms = 2;
-  optional float uplink_packet_loss_fraction = 3;
-  optional bool enable_fec = 4;
-  optional bool enable_dtx = 5;
-  optional uint32 num_channels = 6;
-}
-
-message Event {
-  enum Type {
-    NETWORK_METRICS = 0;
-    ENCODER_RUNTIME_CONFIG = 1;
-  }
-  required Type type = 1;
-  required uint32 timestamp = 2;
-  optional NetworkMetrics network_metrics = 3;
-  optional EncoderRuntimeConfig encoder_runtime_config = 4;
-}