message: Remove Redunent SummaryNack Log
  Description
  Every time we receive a summary nack there are three log entries generated
  Data_eventName
  fluid:telemetry:Summarizer:Running:SummaryNack
  fluid:telemetry:Summarizer:summarizingError
  fluid:telemetry:Summarizer:Running:Summarize_cancel
  The SummaryNack is clearly redundant. It less clear if there cases where Summarize_cancel and summarizingError are not redundant in the non-nack case. so leaving both of those in place
diff: @@ -393,8 +393,6 @@ export class SummaryGenerator {
  // pre-0.58 error message prefix: summaryNack
  const error = new LoggingError(`Received summaryNack: ${message}`, { retryAfterSeconds });
  - logger.sendErrorEvent(
  - { eventName: "SummaryNack", ...summarizeTelemetryProps, retryAfterSeconds }, error);
  assert(getRetryDelaySecondsFromError(error) === retryAfterSeconds, 0x25f /* "retryAfterSeconds" */);
  // This will only set resultsBuilder.receivedSummaryAckOrNack, as other promises are already set.
  