[Skia] Do not set synthetic bold offset

https://bugs.webkit.org/show_bug.cgi?id=270291

Reviewed by Don Olmstead.

It's handled internally by Skia.

* Source/WebCore/platform/graphics/skia/FontSkia.cpp:
(WebCore::Font::platformPathForGlyph const):
(WebCore::Font::platformInit):

Canonical link: https://commits.webkit.org/275541@main

Source/WebCore/platform/graphics/skia/FontSkia.cpp

@@ -38,7 +38,6 @@ Path Font::platformPathForGlyph(Glyph glyph) const
     auto path = PathSkia::create();
     const auto& font = m_platformData.skFont();
     font.getPath(glyph, path->platformPath());
-    // FIXME: syntetic bold offset.
     return { path };
 }
 
@@ -109,8 +108,6 @@ void Font::platformInit()
 
     m_fontMetrics.setUnitsPerEm(font.getTypeface()->getUnitsPerEm());
 
-    m_syntheticBoldOffset = m_platformData.syntheticBold() ? 1.0f : 0.f;
-
     SkString familyName;
     font.getTypeface()->getFamilyName(&familyName);
     if (equalIgnoringASCIICase(familyName.c_str(), "Ahem"_s))