Remove unimplemented CFGAS_GEFont::GetFontInternal() prototype

No such overload, even on windows.

Change-Id: I246b1fc458922268a27f4b6c10444928c5bdb060
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/86179
Auto-Submit: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/xfa/fgas/font/cfgas_gefont.h b/xfa/fgas/font/cfgas_gefont.h
index bd60fd0..4adaac0 100644
--- a/xfa/fgas/font/cfgas_gefont.h
+++ b/xfa/fgas/font/cfgas_gefont.h
@@ -61,7 +61,6 @@
   bool LoadFontInternal(const wchar_t* pszFontFamily,
                         uint32_t dwFontStyles,
                         FX_CodePage wCodePage);
-  bool LoadFontInternal(const uint8_t* pBuffer, int32_t length);
 #endif
   bool LoadFontInternal(std::unique_ptr<CFX_Font> pInternalFont);
   bool LoadFontInternal(const RetainPtr<CPDF_Font>& pPDFFont);