Remove more dead code from cpdf_apsettings.h

Code coverage doesn't even show an entry for this file, which is a
strong hint that the linker hasn't needed any of the inlined functions
in the final binary and has removed them.

Change-Id: Ia7220cac4a757677412590cbc88866888315b949
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/80490
Auto-Submit: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/core/fpdfdoc/cpdf_apsettings.h b/core/fpdfdoc/cpdf_apsettings.h
index a629481..a1d9ecd 100644
--- a/core/fpdfdoc/cpdf_apsettings.h
+++ b/core/fpdfdoc/cpdf_apsettings.h
@@ -36,12 +36,6 @@
   bool HasMKEntry(const ByteString& csEntry) const;
   int GetRotation() const;
 
-  WideString GetNormalCaption() const { return GetCaption("CA"); }
-  WideString GetRolloverCaption() const { return GetCaption("RC"); }
-  WideString GetDownCaption() const { return GetCaption("AC"); }
-  CPDF_Stream* GetNormalIcon() const { return GetIcon("I"); }
-  CPDF_Stream* GetRolloverIcon() const { return GetIcon("RI"); }
-  CPDF_Stream* GetDownIcon() const { return GetIcon("IX"); }
   CPDF_IconFit GetIconFit() const;
 
   // Returns one of the TEXTPOS_* values above.