[Buildbot] #2653: Remove old scheduler methods

[Buildbot trac]

#2653: Remove old scheduler methods
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Reporter:  dustin  |       Owner:
    Type:  task    |      Status:  new
Priority:  minor   |   Milestone:  0.9.+
 Version:          |  Resolution:
Keywords:  simple  |
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Comment (by MikeLing):

 https://github.com/buildbot/buildbot/pull/2008 please review this :)

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Ticket URL: <http://trac.buildbot.net/ticket/2653#comment:3>
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