Revert "Revert "remove kA1_Config, as it is no longer supported""

This reverts commit 36d712f2d4c5c79719280ad95523e6aaa88b068e.

BUG=
R=rmistry@google.com, mtklein@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/86483002

git-svn-id: http://skia.googlecode.com/svn/trunk@12392 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkDrawBitmap.cpp b/src/animator/SkDrawBitmap.cpp
index 568401d..327e813 100644
--- a/src/animator/SkDrawBitmap.cpp
+++ b/src/animator/SkDrawBitmap.cpp
@@ -75,11 +75,10 @@
     const char* formatName;
     switch (format) {
         case 0: formatName = "none"; break;
-        case 1: formatName = "A1"; break;
-        case 2: formatName = "A8"; break;
-        case 3: formatName = "Index8"; break;
-        case 4: formatName = "RGB16"; break;
-        case 5: formatName = "RGB32"; break;
+        case 1: formatName = "A8"; break;
+        case 2: formatName = "Index8"; break;
+        case 3: formatName = "RGB16"; break;
+        case 4: formatName = "RGB32"; break;
     }
     SkDebugf("format=\"%s\" />\n", formatName);
 }