Follow up to r1519958, remove the last vestiges of Ev2 rotate from JavaHL.

* subversion/bindings/javahl/native/CommitEditor.cpp
  (build_rotation): Remove commented code block.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1519976 13f79535-47bb-0310-9956-ffa450edef68