remove kA1_Config, as it is no longer supported

include/core/SkBitmap.h

Index: include/core/SkBitmap.h
diff --git a/include/core/SkBitmap.h b/include/core/SkBitmap.h
index afce3a7278a73ecddc0f316cb2e049f2414318ca..cdbd325a6b198c0f218da889b9a61a7e2b73d261 100644
--- a/include/core/SkBitmap.h
+++ b/include/core/SkBitmap.h
@@ -42,12 +42,6 @@ public:
 
     enum Config {
         kNo_Config,         //!< bitmap has not been configured
-        /**
-         *  1-bit per pixel, (0 is transparent, 1 is opaque)
-         *  Valid as a destination (target of a canvas), but not valid as a src.
-         *  i.e. you can draw into a 1-bit bitmap, but you cannot draw from one.
-         */
-        kA1_Config,
         kA8_Config,         //!< 8-bits per pixel, with only alpha specified (0 is transparent, 0xFF is opaque)
         kIndex8_Config,     //!< 8-bits per pixel, using SkColorTable to specify the colors
         kRGB_565_Config,    //!< 16-bits per pixel, (see SkColorPriv.h for packing)
@@ -489,14 +483,6 @@ public:
      */
     inline uint8_t* getAddr8(int x, int y) const;
 
-    /** Returns the address of the byte containing the pixel specified by x,y
-     *  for 1bit pixels.
-     *  In debug build, this asserts that the pixels are allocated and locked,
-     *  and that the config is 1-bit, however none of these checks are performed
-     *  in the release build.
-     */
-    inline uint8_t* getAddr1(int x, int y) const;
-
     /** Returns the color corresponding to the pixel specified by x,y for
      *  colortable based bitmaps.
      *  In debug build, this asserts that the pixels are allocated and locked,
@@ -818,12 +804,4 @@ inline SkPMColor SkBitmap::getIndex8Color(int x, int y) const {
     return (*fColorTable)[*((const uint8_t*)fPixels + y * fRowBytes + x)];
 }
 
-// returns the address of the byte that contains the x coordinate
-inline uint8_t* SkBitmap::getAddr1(int x, int y) const {
-    SkASSERT(fPixels);
-    SkASSERT(fConfig == kA1_Config);
-    SkASSERT((unsigned)x < fWidth && (unsigned)y < fHeight);
-    return (uint8_t*)fPixels + y * fRowBytes + (x >> 3);
-}
-
 #endif