Delete dead code for cloning various types. R=kbr@chromium.org Review URL: https://codereview.appspot.com/9242043 git-svn-id: https://angleproject.googlecode.com/svn/trunk@2197 736b8ea6-26fd-11df-bfd4-992fa37f6226 TRAC #23333 Authored-by: alokp@chromium.org Signed-off-by: Shannon Woods Signed-off-by Nicolas Capens Merged-by: Jamie Madill