remove kA1_Config, as it is no longer supported

BUG=
R=djsollen@google.com

Review URL: https://codereview.chromium.org/83093005

git-svn-id: http://skia.googlecode.com/svn/trunk@12384 2bbb7eff-a529-9590-31e7-b0007b416f81
20 files changed