remove dst/rendertarget support for kARGB_4444_Config

include/core/SkBlitRow.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBlitRow_DEFINED
 #define SkBlitRow_DEFINED
 
@@ skipping 74 matching lines @@
     static ColorRectProc ColorRectProcFactory();
 
     /** These static functions are called by the Factory and Factory32
         functions, and should return either NULL, or a
         platform-specific function-ptr to be used in place of the
         system default.
      */
 
     static Proc32 PlatformProcs32(unsigned flags);
     static Proc PlatformProcs565(unsigned flags);
-    static Proc PlatformProcs4444(unsigned flags);
     static ColorProc PlatformColorProc();
 
 private:
     enum {
         kFlags16_Mask = 7,
         kFlags32_Mask = 3
     };
 };
 
 #endif