remove uncalled local functions

src/ports/SkFontHost_win_dw.cpp

Index: src/ports/SkFontHost_win_dw.cpp
diff --git a/src/ports/SkFontHost_win_dw.cpp b/src/ports/SkFontHost_win_dw.cpp
index 5df90b47f387cace1fbf35211e39500763eccc64..e1685e63b0750cbc2afe20657d6e5bd2bfc1b9b2 100644
--- a/src/ports/SkFontHost_win_dw.cpp
+++ b/src/ports/SkFontHost_win_dw.cpp
@@ -725,9 +725,6 @@ void SkDWriteFontFromTypeface(const SkTypeface* face, IDWriteFont** font) {
         *font = SkRefComPtr(static_cast<const DWriteFontTypeface*>(face)->fDWriteFont.get());
     }
 }
-static DWriteFontTypeface* GetDWriteFontByID(SkFontID fontID) {
-    return static_cast<DWriteFontTypeface*>(SkTypefaceCache::FindByID(fontID));
-}
 
 SkScalerContext_DW::SkScalerContext_DW(DWriteFontTypeface* typeface,
                                                  const SkDescriptor* desc)