Revert of Mojo JS bindings: change module loading solution.

mojo/public/tools/bindings/mojom_bindings_generator.py

Index: mojo/public/tools/bindings/mojom_bindings_generator.py
diff --git a/mojo/public/tools/bindings/mojom_bindings_generator.py b/mojo/public/tools/bindings/mojom_bindings_generator.py
index a9650d77640776f4fa9e0814236fee5b22a7e98b..3a0b6fc87e25f23febb0e6ff049728f6013fcb42 100755
--- a/mojo/public/tools/bindings/mojom_bindings_generator.py
+++ b/mojo/public/tools/bindings/mojom_bindings_generator.py
@@ -167,7 +167,6 @@
             variant=args.variant, bytecode_path=args.bytecode_path,
             for_blink=args.for_blink,
             use_once_callback=args.use_once_callback,
-            use_new_js_bindings=args.use_new_js_bindings,
             export_attribute=args.export_attribute,
             export_header=args.export_header,
             generate_non_variant_code=args.generate_non_variant_code)
@@ -299,10 +298,6 @@
       "--use_once_callback", action="store_true",
       help="Use base::OnceCallback instead of base::RepeatingCallback.")
   generate_parser.add_argument(
-      "--use_new_js_bindings", action="store_true",
-      help="Use the new module loading approach and the core API exposed by "
-      "Web IDL. This option only affects the JavaScript bindings.")
-  generate_parser.add_argument(
       "--export_attribute", type=str, default="",
       help="Optional attribute to specify on class declaration to export it "
       "for the component build.")