metrics: Remove unused metrics.

BUG=chromium:365385
TEST=Unit tests pass.

Change-Id: I31a29e3e9a76567f9b365bfac82b6415ec776842
Reviewed-on: https://chromium-review.googlesource.com/195840
Reviewed-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: David Zeuthen <zeuthen@chromium.org>
Tested-by: David Zeuthen <zeuthen@chromium.org>
diff --git a/metrics.cc b/metrics.cc
index 9bcb859..94685e6 100644
--- a/metrics.cc
+++ b/metrics.cc
@@ -49,10 +49,6 @@
     "UpdateEngine.Attempt.TimeSinceLastAttemptMinutes";
 const char kMetricAttemptTimeSinceLastAttemptUptimeMinutes[] =
     "UpdateEngine.Attempt.TimeSinceLastAttemptUptimeMinutes";
-const char kMetricAttemptPayloadBytesOffset[] =
-    "UpdateEngine.Attempt.PayloadBytesOffset";
-const char kMetricAttemptPayloadBytesNeeded[] =
-    "UpdateEngine.Attempt.PayloadBytesNeeded";
 const char kMetricAttemptPayloadBytesDownloadedMiB[] =
     "UpdateEngine.Attempt.PayloadBytesDownloadedMiB";
 const char kMetricAttemptPayloadDownloadSpeedKBps[] =
diff --git a/metrics.h b/metrics.h
index 99d1e5e..895e816 100644
--- a/metrics.h
+++ b/metrics.h
@@ -35,8 +35,6 @@
 extern const char kMetricAttemptDurationUptimeMinutes[];
 extern const char kMetricAttemptTimeSinceLastAttemptSeconds[];
 extern const char kMetricAttemptTimeSinceLastAttemptUptimeSeconds[];
-extern const char kMetricAttemptPayloadBytesOffset[];
-extern const char kMetricAttemptPayloadBytesNeeded[];
 extern const char kMetricAttemptPayloadBytesDownloaded[];
 extern const char kMetricAttemptPayloadDownloadSpeedKBps[];
 extern const char kMetricAttemptDownloadSource[];