Remove unused Module-related AST nodes and associated codegen

src/compiler/ast-loop-assignment-analyzer.cc

Index: src/compiler/ast-loop-assignment-analyzer.cc
diff --git a/src/compiler/ast-loop-assignment-analyzer.cc b/src/compiler/ast-loop-assignment-analyzer.cc
index a20f13f529d2f67f89c6d374813c23eb54c904f9..05a4ceb873145447220c10d2a38ac8f0404d547a 100644
--- a/src/compiler/ast-loop-assignment-analyzer.cc
+++ b/src/compiler/ast-loop-assignment-analyzer.cc
@@ -55,11 +55,8 @@ void ALAA::Exit(IterationStatement* loop) {
 
 void ALAA::VisitVariableDeclaration(VariableDeclaration* leaf) {}
 void ALAA::VisitFunctionDeclaration(FunctionDeclaration* leaf) {}
-void ALAA::VisitModuleDeclaration(ModuleDeclaration* leaf) {}
 void ALAA::VisitImportDeclaration(ImportDeclaration* leaf) {}
 void ALAA::VisitExportDeclaration(ExportDeclaration* leaf) {}
-void ALAA::VisitModulePath(ModulePath* leaf) {}
-void ALAA::VisitModuleUrl(ModuleUrl* leaf) {}
 void ALAA::VisitEmptyStatement(EmptyStatement* leaf) {}
 void ALAA::VisitContinueStatement(ContinueStatement* leaf) {}
 void ALAA::VisitBreakStatement(BreakStatement* leaf) {}
@@ -76,9 +73,6 @@ void ALAA::VisitSuperReference(SuperReference* leaf) {}
 // ---------------------------------------------------------------------------
 // -- Pass-through nodes------------------------------------------------------
 // ---------------------------------------------------------------------------
-void ALAA::VisitModuleLiteral(ModuleLiteral* e) { Visit(e->body()); }
-
-
 void ALAA::VisitBlock(Block* stmt) { VisitStatements(stmt->statements()); }
 
 
@@ -207,12 +201,6 @@ void ALAA::VisitCaseClause(CaseClause* cc) {
 // ---------------------------------------------------------------------------
 // -- Interesting nodes-------------------------------------------------------
 // ---------------------------------------------------------------------------
-void ALAA::VisitModuleStatement(ModuleStatement* stmt) {
-  // TODO(turbofan): can a module appear in a loop?
-  Visit(stmt->body());
-}
-
-
 void ALAA::VisitTryCatchStatement(TryCatchStatement* stmt) {
   Visit(stmt->try_block());
   Visit(stmt->catch_block());