Rip out most of our outdated modules implementation.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 0c92f2093247e8940353efa8b9f283ff753ff9d2..834c0de8989e79f36db78aec4105c1432df0ebdb 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -108,9 +108,6 @@ void HeapObject::HeapObjectVerify() {
     case JS_GENERATOR_OBJECT_TYPE:
       JSGeneratorObject::cast(this)->JSGeneratorObjectVerify();
       break;
-    case JS_MODULE_TYPE:
-      JSModule::cast(this)->JSModuleVerify();
-      break;
     case JS_VALUE_TYPE:
       JSValue::cast(this)->JSValueVerify();
       break;
@@ -430,14 +427,6 @@ void JSGeneratorObject::JSGeneratorObjectVerify() {
 }
 
 
-void JSModule::JSModuleVerify() {
-  VerifyObjectField(kContextOffset);
-  VerifyObjectField(kScopeInfoOffset);
-  CHECK(context()->IsUndefined(GetIsolate()) ||
-        Context::cast(context())->IsModuleContext());
-}
-
-
 void JSValue::JSValueVerify() {
   Object* v = value();
   if (v->IsHeapObject()) {