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

This reverts commit f746273b8ba282f548a6eaffb45b11b6f468aa8e.

Review URL: https://codereview.chromium.org/29343002

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@11858 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed