Remove custom style building for -webkit-font-feature-settings.

Source/platform/fonts/FontDescription.h

Index: Source/platform/fonts/FontDescription.h
diff --git a/Source/platform/fonts/FontDescription.h b/Source/platform/fonts/FontDescription.h
index 6036d92cee5616a3af718a5d376893006459d215..a19db1229eef8580952afa6faa45505325cccb65 100644
--- a/Source/platform/fonts/FontDescription.h
+++ b/Source/platform/fonts/FontDescription.h
@@ -146,7 +146,6 @@ public:
     NonCJKGlyphOrientation nonCJKGlyphOrientation() const { return static_cast<NonCJKGlyphOrientation>(m_nonCJKGlyphOrientation); }
     FontWidthVariant widthVariant() const { return static_cast<FontWidthVariant>(m_widthVariant); }
     FontFeatureSettings* featureSettings() const { return m_featureSettings.get(); }
-    FontDescription makeNormalFeatureSettings() const;
 
     float effectiveFontSize() const; // Returns either the computedSize or the computedPixelSize
     FontCacheKey cacheKey(const FontFaceCreationParams&, FontTraits desiredTraits = FontTraits(0)) const;