[bindings] Remove custom setter used in CSSStyleDeclaration

Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp

Index: Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
diff --git a/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp b/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
index d406695df9120f471e70319c4e1c25ef353a69c3..e26086af3fe9e0b6f64af61848bb04b8038fea53 100644
--- a/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
+++ b/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
@@ -210,23 +210,4 @@ void V8CSSStyleDeclaration::namedPropertyGetterCustom(v8::Local<v8::Name> name,
     v8SetReturnValueString(info, result, info.GetIsolate());
 }
 
-void V8CSSStyleDeclaration::namedPropertySetterCustom(v8::Local<v8::Name> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    if (!name->IsString())
-        return;
-    CSSStyleDeclaration* impl = V8CSSStyleDeclaration::toImpl(info.Holder());
-    CSSPropertyID unresolvedProperty = cssPropertyInfo(name.As<v8::String>(), info.GetIsolate());
-    if (!unresolvedProperty)
-        return;
-
-    TOSTRING_VOID(V8StringResource<TreatNullAsNullString>, propertyValue, value);
-    ExceptionState exceptionState(ExceptionState::SetterContext, getPropertyName(resolveCSSPropertyID(unresolvedProperty)), "CSSStyleDeclaration", info.Holder(), info.GetIsolate());
-    impl->setPropertyInternal(unresolvedProperty, propertyValue, false, exceptionState);
-
-    if (exceptionState.throwIfNeeded())
-        return;
-
-    v8SetReturnValue(info, value);
-}
-
 } // namespace blink