Revert "[PDF] Add unpremultiply support and a GM (try3)."

This is crashing in some configurations, can now repro.

This reverts commit 12add177d0ab7bbac97f5093c9382924d88bde8c.

Review URL: https://codereview.chromium.org/29903002

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11868 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed