Remove position from FrontBufferedStream

src/utils/SkFrontBufferedStream.cpp

Index: src/utils/SkFrontBufferedStream.cpp
diff --git a/src/utils/SkFrontBufferedStream.cpp b/src/utils/SkFrontBufferedStream.cpp
index e0b586a29d830fbfa00cbf5d954bbc5162ef0d46..a0dbeb6a7a0db28d936b323368be5faa9493d5bc 100644
--- a/src/utils/SkFrontBufferedStream.cpp
+++ b/src/utils/SkFrontBufferedStream.cpp
@@ -22,10 +22,6 @@ public:
 
     bool rewind() override;
 
-    bool hasPosition() const override { return true; }
-
-    size_t getPosition() const override { return fOffset; }
-
     bool hasLength() const override { return fHasLength; }
 
     size_t getLength() const override { return fLength; }