Jitter evaluation, as an alert trigger, was changed in 3.0 to get the internal
average jitter used in the conn-status component data (which is total jitter
delay divided by jitterbuffer emit events). This was done accidentally and that
metric is _very_ different from the one used in 2.7 (point-in-time jitter from
remote-inbound-rtp/inbound-rtp, highest on the interval, gathered on
/utils/stats.js). The alert thresholds were preserved, which makes it overly
sensitive in regards to jitter (and thus causes it to be critical whenever the
user is in audio).
Remove jitter as a connection status alert trigger, which fixes the
false positive. The implementation on <= 2.7 is also not ideal - if
anything, it generates false negatives. That's why I'm removing jitter for
the time being since it's ill-suited (at least in the way it's used)
for what we want to achieve.
