0072c3a1d2
finally removes deprecated APIs from before the 0.9 days that were replaced over time. See https://docs.buildbot.net/current/relnotes/index.html#buildbot-3-0-2-2021-03-16 for relnotes and https://docs.buildbot.net/current/relnotes/index.html#deprecations-and-removals for details about the removals.