remove js from api overview

Author: jderochervlk

pages/docs/manual/v12.0.0/api.mdx

@@ -11,8 +11,4 @@ In ReScript 11, it is shipped as a separate npm package `@rescript/core` that is
 ReScript ships with these two additional modules in its standard library:
 
 - [Belt](api/belt): immutable collections and extra helpers not available in JavaScript / [Core](api/core).
-- [Dom](api/dom): Dom related types and modules. Contains our standardized types used by various userland DOM bindings.
-
-## Legacy Modules
-
-The [Js](api/js) module is superseded by [Core](api/core).
+- [Dom](api/dom): Dom related types and modules. Contains our standardized types used by various userland DOM bindings.