Remove custom element :unresolved.

sky/engine/core/css/CSSSelector.cpp

Index: sky/engine/core/css/CSSSelector.cpp
diff --git a/sky/engine/core/css/CSSSelector.cpp b/sky/engine/core/css/CSSSelector.cpp
index d49e5f5ee83f17fc5eca42d1bfea2bf256bb94a4..32b05c4ec813dfdf9e8b05d395252f3edbe04d76 100644
--- a/sky/engine/core/css/CSSSelector.cpp
+++ b/sky/engine/core/css/CSSSelector.cpp
@@ -68,7 +68,6 @@ PseudoId CSSSelector::pseudoId(PseudoType type)
     case PseudoActive:
     case PseudoLang:
     case PseudoUserAgentCustomElement:
-    case PseudoUnresolved:
     case PseudoHost:
         return NOPSEUDO;
     case PseudoNotParsed:
@@ -96,7 +95,6 @@ const static NameToPseudoStruct pseudoTypeMap[] = {
 {"host(",                         CSSSelector::PseudoHost},
 {"hover",                         CSSSelector::PseudoHover},
 {"lang(",                         CSSSelector::PseudoLang},
-{"unresolved",                    CSSSelector::PseudoUnresolved},
 };
 
 class NameToPseudoCompare {
@@ -180,7 +178,6 @@ void CSSSelector::extractPseudoType() const
     case PseudoLang:
     case PseudoNotParsed:
     case PseudoHost:
-    case PseudoUnresolved:
         break;
     }