message: [push-metrics] Remove debug log of metrics
  This is noisy in the logs, and not necessary now that this is working.
  Closes:
  Approved by: ankushagarwal
diff: // SPDX-License-Identifier: Apache-2.0
  use crate::counters::Metrics;
  -use libra_logger::{debug, error, info};
  +use libra_logger::{error, info};
  use std::{env, sync::Arc, thread, thread::JoinHandle, time::Duration};
  const DEFAULT_PUSH_FREQUENCY_SECS: u64 = 15;
  @@ -25,7 +25,6 @@ impl MetricsPusher {
  let metric_data = metric.get_push_metric_format();
  data.push_str(&metric_data);
  }
  - debug!("Metrics sent to server:\n{}", data);
  let response = ureq::post(&push_metrics_endpoint)
  .timeout_connect(10_000)
  .send_string(&data);
  