The WP-Members plugin does not exercise any control over WordPress native fields as far as removing them from the User Profile. The plugin only determines if you are using these in the front-end elements of the plugin (such as front-side registration and front-side user profile). If you are not using a handful of these fields and would like to remove them from the User Profile (yoursite.com/wp-admin/user-edit.php), you can do that with a little bit of scripting in your functions.php file. Here are some examples.
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