Speculative Mac 10.6 fix: remove useless code from matriximagefilter GM.

TBR=mtklein@google.com
BUG=skia:

Review URL: https://codereview.chromium.org/211703002

git-svn-id: http://skia.googlecode.com/svn/trunk@13944 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed