Remove meta viewport and @viewport CSS rules.

sky/engine/core/css/invalidation/StyleSheetInvalidationAnalysis.cpp

Index: sky/engine/core/css/invalidation/StyleSheetInvalidationAnalysis.cpp
diff --git a/sky/engine/core/css/invalidation/StyleSheetInvalidationAnalysis.cpp b/sky/engine/core/css/invalidation/StyleSheetInvalidationAnalysis.cpp
index 2d1a1a22c9de14c95b81255391cb1caac7c6d892..05a20bc32e816e79e9ea37338b49be2a8fb77b33 100644
--- a/sky/engine/core/css/invalidation/StyleSheetInvalidationAnalysis.cpp
+++ b/sky/engine/core/css/invalidation/StyleSheetInvalidationAnalysis.cpp
@@ -83,7 +83,6 @@ static bool ruleAdditionMightRequireDocumentStyleRecalc(StyleRuleBase* rule)
     case StyleRule::Media: // If the media rule doesn't apply, we could avoid recalc.
     case StyleRule::FontFace: // If the fonts aren't in use, we could avoid recalc.
     case StyleRule::Supports: // If we evaluated the supports-clause we could avoid recalc.
-    case StyleRule::Viewport: // If the viewport doesn't match, we could avoid recalcing.
     // FIXME: Unclear if any of the rest need to cause style recalc:
     case StyleRule::Filter:
         return true;