remove dead code behind BOOL_ONGETINFO

src/images/SkDecodingImageGenerator.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkData.h"
 #include "SkDecodingImageGenerator.h"
 #include "SkImageDecoder.h"
@@ skipping 20 matching lines @@
     const bool                          fDitherImage;
 
     DecodingImageGenerator(SkData* data,
                            SkStreamRewindable* stream,
                            const SkImageInfo& info,
                            int sampleSize,
                            bool ditherImage);
 
 protected:
     SkData* onRefEncodedData() override;
-#ifdef SK_SUPPORT_LEGACY_BOOL_ONGETINFO
-    bool onGetInfo(SkImageInfo* info) override {
-        *info = fInfo;
-        return true;
-    }
-#endif
     Result onGetPixels(const SkImageInfo& info,
                        void* pixels, size_t rowBytes, const Options&,
                        SkPMColor ctable[], int* ctableCount) override;
     bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
                          SkYUVColorSpace* colorSpace) override;
 
 private:
     typedef SkImageGenerator INHERITED;
 };
 
@@ skipping 237 matching lines @@
 
 SkImageGenerator* SkDecodingImageGenerator::Create(
         SkStreamRewindable* stream,
         const SkDecodingImageGenerator::Options& opts) {
     SkASSERT(stream != NULL);
     if (stream == NULL) {
         return NULL;
     }
     return CreateDecodingImageGenerator(NULL, stream, opts);
 }