Sheriffing: Disable DevToolsSanityTest.TestNoScriptDuplicatesOnPanelSwitch on win.

BUG=317725
TBR=yurys@chromium.org,mpearson@chromium.org

Review URL: https://codereview.chromium.org/63543004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234221 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234221