remove 565 effects shaders

src/core/SkPictureShader.cpp

Index: src/core/SkPictureShader.cpp
diff --git a/src/core/SkPictureShader.cpp b/src/core/SkPictureShader.cpp
index 92e615734380dd02cc1367bfcc3108e54cef1022..c803f7d878c43260266058cf848bbd4207663f9d 100644
--- a/src/core/SkPictureShader.cpp
+++ b/src/core/SkPictureShader.cpp
@@ -290,11 +290,6 @@ void SkPictureShader::PictureShaderContext::shadeSpan(int x, int y, SkPMColor ds
     fBitmapShaderContext->shadeSpan(x, y, dstC, count);
 }
 
-void SkPictureShader::PictureShaderContext::shadeSpan16(int x, int y, uint16_t dstC[], int count) {
-    SkASSERT(fBitmapShaderContext);
-    fBitmapShaderContext->shadeSpan16(x, y, dstC, count);
-}
-
 #ifndef SK_IGNORE_TO_STRING
 void SkPictureShader::toString(SkString* str) const {
     static const char* gTileModeName[SkShader::kTileModeCount] = {