[es6] Consistently use %_GetSuperConstructor to implement super calls.

src/full-codegen/full-codegen.cc

Index: src/full-codegen/full-codegen.cc
diff --git a/src/full-codegen/full-codegen.cc b/src/full-codegen/full-codegen.cc
index 3ffe25adf1afec582b9702e1e79ec0bfd2f4dd32..7b4ca4f441964af64bcb0e72dca9032d013c896b 100644
--- a/src/full-codegen/full-codegen.cc
+++ b/src/full-codegen/full-codegen.cc
@@ -920,12 +920,6 @@ void FullCodeGenerator::EmitPropertyKey(ObjectLiteralProperty* property,
 }
 
 
-void FullCodeGenerator::EmitLoadSuperConstructor(SuperCallReference* ref) {
-  VisitForStackValue(ref->this_function_var());
-  __ CallRuntime(Runtime::kGetPrototype, 1);
-}
-
-
 void FullCodeGenerator::VisitReturnStatement(ReturnStatement* stmt) {
   Comment cmnt(masm_, "[ ReturnStatement");
   SetStatementPosition(stmt);