Move XP fast/text/international/plane2.html failure to NeverFixTests

fast/text/international/plane2.html covers characters that we do not
support on Windows XP. Move to NeverFixTests.

TBR=ojan@chromium.org

Review URL: https://codereview.chromium.org/379333002

git-svn-id: svn://svn.chromium.org/blink/trunk@177781 bbb929c8-8fbe-4397-9dbb-9b2b20218538