LibPDF: Remove declarations for non-existent methods

Author: https://github.com/AtkinsSJ
Commit: bc1504c794
Pull-request: https://github.com/SerenityOS/serenity/pull/17203
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibPDF/Fonts/PS1FontProgram.h

@@ -23,8 +23,6 @@ public:
     static PDFErrorOr<NonnullRefPtr<Type1FontProgram>> create(ReadonlyBytes const&, RefPtr<Encoding>, size_t cleartext_length, size_t encrypted_length);
 
 private:
-    Gfx::AffineTransform glyph_transform_to_device_space(Glyph const&, float width) const;
-
     PDFErrorOr<void> parse_encrypted_portion(ByteBuffer const&);
     PDFErrorOr<Vector<ByteBuffer>> parse_subroutines(Reader&) const;
     static PDFErrorOr<Vector<float>> parse_number_array(Reader&, size_t length);