Disable the test due to Win64 build problems.

The large allocation actually succeeds on Win64, but it looks like
subsequent memory adjustment fails. Disabling the test for now, will
investigate further.

TBR=rossberg

Review URL: https://codereview.chromium.org/14330006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00