Revert of change pixel-serializer to support reencoding existing data

src/images/SkImageEncoder.cpp

Index: src/images/SkImageEncoder.cpp
diff --git a/src/images/SkImageEncoder.cpp b/src/images/SkImageEncoder.cpp
index 4ad12c84cd60d7b9701e4b0ea92808150422eb3a..cc1b73baa52150de72f20c1543634503d83770f9 100644
--- a/src/images/SkImageEncoder.cpp
+++ b/src/images/SkImageEncoder.cpp
@@ -60,13 +60,3 @@
     SkAutoTDelete<SkImageEncoder> enc(SkImageEncoder::Create(t));
     return enc.get() ? enc.get()->encodeData(bm, quality) : nullptr;
 }
-
-SkData* SkImageEncoder::EncodeData(const SkPixmap& pmap, Type t, int quality) {
-    return EncodeData(pmap.info(), pmap.addr(), pmap.rowBytes(), t, quality);
-}
-
-SkData* SkImageEncoder::ReencodeData(SkData* encoded, Type t) {
-    SkAutoTDelete<SkImageEncoder> enc(SkImageEncoder::Create(t));
-    return enc.get() ? enc.get()->onReencodeData(encoded) : nullptr;
-}
-