[conformal/btcd] 1483b9: Remove outdated comment.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: 1483b92dcf8ac9b6ecca2e8cfea776f92aa261e2
      
https://github.com/conformal/btcd/commit/1483b92dcf8ac9b6ecca2e8cfea776f92aa261e2
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-07-10 (Thu, 10 Jul 2014)

  Changed paths:
    M blockmanager.go

  Log Message:
  -----------
  Remove outdated comment.