Merge pull request #549 from CodingCat/deadcode_master. Closes #549.

remove actorToWorker in master.scala, which is actually not used

actorToWorker is actually not used in the code....just remove it

Author: CodingCat <zhunansjtu@gmail.com>

== Merge branch commits ==

commit 52656c2d4bbf9abcd8bef65d454badb9cb14a32c
Author: CodingCat <zhunansjtu@gmail.com>
Date:   Thu Feb 6 00:28:26 2014 -0500

    remove actorToWorker in master.scala, which is actually not used