Remove unused Module-related AST nodes and associated codegen

src/rewriter.cc

Index: src/rewriter.cc
diff --git a/src/rewriter.cc b/src/rewriter.cc
index 0720990b258435a3a5d4f666bd9e80d60fc836cb..4780538e1be140d1a583f9f3e69bca7f0c29ca2c 100644
--- a/src/rewriter.cc
+++ b/src/rewriter.cc
@@ -87,13 +87,6 @@ void Processor::VisitBlock(Block* node) {
 }
 
 
-void Processor::VisitModuleStatement(ModuleStatement* node) {
-  bool set_after_body = is_set_;
-  Visit(node->body());
-  is_set_ = is_set_ && set_after_body;
-}
-
-
 void Processor::VisitExpressionStatement(ExpressionStatement* node) {
   // Rewrite : <x>; -> .result = <x>;
   if (!is_set_ && !node->expression()->IsThrow()) {
@@ -201,12 +194,8 @@ void Processor::VisitWithStatement(WithStatement* node) {
 // Do nothing:
 void Processor::VisitVariableDeclaration(VariableDeclaration* node) {}
 void Processor::VisitFunctionDeclaration(FunctionDeclaration* node) {}
-void Processor::VisitModuleDeclaration(ModuleDeclaration* node) {}
 void Processor::VisitImportDeclaration(ImportDeclaration* node) {}
 void Processor::VisitExportDeclaration(ExportDeclaration* node) {}
-void Processor::VisitModuleLiteral(ModuleLiteral* node) {}
-void Processor::VisitModulePath(ModulePath* node) {}
-void Processor::VisitModuleUrl(ModuleUrl* node) {}
 void Processor::VisitEmptyStatement(EmptyStatement* node) {}
 void Processor::VisitReturnStatement(ReturnStatement* node) {}
 void Processor::VisitDebuggerStatement(DebuggerStatement* node) {}