GitLab

Remove two obsolete flags: FLAGS_quic_bbr_rtt_variation_weight and
FLAGS_quic_ietf_draft_version.

Every remaining flag is a reloadable flag or a restart flag, all
Boolean.  Remove type argument.

Change-Id: I0b9d6db33b82968c05aa8025d86921f1df7a29b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2502751Reviewed-by: David Schinazi <dschinazi@chromium.org>
Reviewed-by: Victor Vasiliev <vasilvv@chromium.org>
Commit-Queue: Bence Béky <bnc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821330}