Remove webrtc_rendering_stats TBMv1 metrics

telemetry/telemetry/web_perf/timeline_based_measurement.py

Index: telemetry/telemetry/web_perf/timeline_based_measurement.py
diff --git a/telemetry/telemetry/web_perf/timeline_based_measurement.py b/telemetry/telemetry/web_perf/timeline_based_measurement.py
index dbc5e67189368f7a4bf7d7ee044d6df0c60e0e87..fb9fe480ee98823530ca36b3fa316246623d916c 100644
--- a/telemetry/telemetry/web_perf/timeline_based_measurement.py
+++ b/telemetry/telemetry/web_perf/timeline_based_measurement.py
@@ -14,7 +14,6 @@ from telemetry.value import trace
 from telemetry.value import common_value_helpers
 from telemetry.web_perf.metrics import timeline_based_metric
 from telemetry.web_perf.metrics import blob_timeline
-from telemetry.web_perf.metrics import webrtc_rendering_timeline
 from telemetry.web_perf.metrics import gpu_timeline
 from telemetry.web_perf.metrics import indexeddb_timeline
 from telemetry.web_perf.metrics import layout
@@ -46,9 +45,7 @@ def _GetAllLegacyTimelineBasedMetrics():
           layout.LayoutMetric(),
           gpu_timeline.GPUTimelineMetric(),
           blob_timeline.BlobTimelineMetric(),
-          indexeddb_timeline.IndexedDBTimelineMetric(),
-          webrtc_rendering_timeline.WebRtcRenderingTimelineMetric())
-
+          indexeddb_timeline.IndexedDBTimelineMetric())
 
 class InvalidInteractions(Exception):
   pass