Rip out most of our outdated modules implementation.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index cbb0b34757f2c0ea5af51043580981c3b0ebb7f8..6154a4ebfb533561515bfb1473709ff70ddcc848 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -817,10 +817,6 @@ void BytecodeGenerator::VisitImportDeclaration(ImportDeclaration* decl) {
   UNIMPLEMENTED();
 }
 
-void BytecodeGenerator::VisitExportDeclaration(ExportDeclaration* decl) {
-  UNIMPLEMENTED();
-}
-
 void BytecodeGenerator::VisitDeclarations(
     ZoneList<Declaration*>* declarations) {
   RegisterAllocationScope register_scope(this);