GitLab

Remove expiry date for core webrtc health metrics.

These are used to monitor WebRTC performance over time, and is not part
of any particular experiment setup.
As such, it does not make sense to have expiry dates for them, that
needs to be maintained.

Bug: 1109878, 1109877, 1105014, 1091162, 1089987, 1089667, 1087422, 1075638, 1072675, 1068041, 1066086, 1053185, 1041092, 1037408, 1018112, 1008000, 1000023, 988738, 988737, 988727, 988718, 988701, 988698, 988685, 988680, 988637, 988632, 974250, 1121219
Change-Id: I5433c5187e0f51b418dca446570b14b34f563bfe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2362701
Auto-Submit: Erik Språng <sprang@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: Erik Språng <sprang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803466}