IDL: Drop [PerContextEnabled] extended attribute

Source/bindings/templates/methods.cpp

Index: Source/bindings/templates/methods.cpp
diff --git a/Source/bindings/templates/methods.cpp b/Source/bindings/templates/methods.cpp
index b220f032227d74b2f494154d4bd0b0ddc8a8d8b3..2a892ad05f48a9c6c48d754072234e2decd347b7 100644
--- a/Source/bindings/templates/methods.cpp
+++ b/Source/bindings/templates/methods.cpp
@@ -642,9 +642,6 @@ void {{v8_class_or_partial}}::installConditionallyEnabledMethods(v8::Local<v8::O
     ASSERT(context);
 
     {% for method in conditionally_enabled_methods %}
-    {% filter per_context_enabled(method.overloads.per_context_enabled_function_all
-                                  if method.overloads else
-                                  method.per_context_enabled_function) %}
     {% filter exposed(method.overloads.exposed_test_all
                       if method.overloads else
                       method.exposed_test) %}
@@ -654,7 +651,6 @@ void {{v8_class_or_partial}}::installConditionallyEnabledMethods(v8::Local<v8::O
     prototypeObject->Set(v8AtomicString(isolate, "{{method.name}}"), v8::FunctionTemplate::New(isolate, {{cpp_class_or_partial}}V8Internal::{{method.name}}MethodCallback, v8Undefined(), defaultSignature, {{method.number_of_required_arguments}})->GetFunction(isolate->GetCurrentContext()).ToLocalChecked());
     {% endfilter %}{# runtime_enabled() #}
     {% endfilter %}{# exposed() #}
-    {% endfilter %}{# per_context_enabled() #}
     {% endfor %}
     {% endif %}
 }