message: Remove unused traces set on every message
  These values are not used, and bloat message sizes.
diff: @@ -37,7 +37,6 @@ import {
  ISequencedDocumentMessage,
  ISignalMessage,
  MessageType,
  - ITrace,
  ConnectionMode,
  } from "@fluidframework/protocol-definitions";
  import {
  @@ -184,19 +183,11 @@ export class DeltaManager<TConnectionManager extends IConnectionManager>
  public get clientDetails() { return this.connectionManager.clientDetails; }
  public submit(type: MessageType, contents: any, batch = false, metadata?: any) {
  - // Start adding trace for the op.
  - const traces: ITrace[] = [
  - {
  - action: "start",
  - service: "client",
  - timestamp: Date.now(),
  - }];
  const messagePartial: Omit<IDocumentMessage, "clientSequenceNumber"> = {
  contents: JSON.stringify(contents),
  metadata,
  referenceSequenceNumber: this.lastProcessedSequenceNumber,
  - traces,
  type,
  };
  @@ -784,15 +775,6 @@ export class DeltaManager<TConnectionManager extends IConnectionManager>
  this.connectionManager.beforeProcessingIncomingOp(message);
  - // Add final ack trace.
  - if (message.traces !== undefined && message.traces.length > 0) {
  - message.traces.push({
  - action: "end",
  - service: "client",
  - timestamp: Date.now(),
  - });
  - }
  -
  // Watch the minimum sequence number and be ready to update as needed
  if (this.minSequenceNumber > message.minimumSequenceNumber) {
  throw new DataCorruptionError("msnMovesBackwards", {
  