remove kRLE_Index8_Config from SkBitmap

BUG=
R=djsollen@google.com

Review URL: https://codereview.chromium.org/17740003

git-svn-id: http://skia.googlecode.com/svn/trunk@9764 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed