Remove CFGAS_FontMgr::RemoveFont().

It is never called.

Change-Id: I95bcfe260099502ca5388cfd78cb6b49ffa84163
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/73331
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

xfa/fgas/font/cfgas_fontmgr.cpp

diff --git a/xfa/fgas/font/cfgas_fontmgr.cpp b/xfa/fgas/font/cfgas_fontmgr.cpp
index cacb962..9153e8a 100644
--- a/xfa/fgas/font/cfgas_fontmgr.cpp
+++ b/xfa/fgas/font/cfgas_fontmgr.cpp
@@ -886,26 +886,3 @@
   return GetFontByCodePage(wCodePage, dwFontStyles, pszFontFamily);
 #endif  // defined(OS_WIN)
 }
-
-void CFGAS_FontMgr::RemoveFont(const RetainPtr<CFGAS_GEFont>& pEFont) {
-  if (!pEFont)
-    return;
-
-#if !defined(OS_WIN)
-  m_IFXFont2FileRead.erase(pEFont);
-#endif
-
-  auto iter = m_Hash2Fonts.begin();
-  while (iter != m_Hash2Fonts.end()) {
-    auto old_iter = iter++;
-    bool all_empty = true;
-    for (size_t i = 0; i < old_iter->second.size(); i++) {
-      if (old_iter->second[i] == pEFont)
-        old_iter->second[i].Reset();
-      else if (old_iter->second[i])
-        all_empty = false;
-    }
-    if (all_empty)
-      m_Hash2Fonts.erase(old_iter);
-  }
-}

xfa/fgas/font/cfgas_fontmgr.h

diff --git a/xfa/fgas/font/cfgas_fontmgr.h b/xfa/fgas/font/cfgas_fontmgr.h
index 6c7df2c..94def1c 100644
--- a/xfa/fgas/font/cfgas_fontmgr.h
+++ b/xfa/fgas/font/cfgas_fontmgr.h
@@ -110,8 +110,6 @@
   RetainPtr<CFGAS_GEFont> LoadFont(const wchar_t* pszFontFamily,
                                    uint32_t dwFontStyles,
                                    uint16_t wCodePage);
-  void RemoveFont(const RetainPtr<CFGAS_GEFont>& pFont);
-
   bool EnumFonts();
 
  private: