Hide Contact (admin.php/?page=wpcf7 from editor

Hi guys,

I have some users I’m really restricting access to, so basically they can only post in 1 category and not see much else.

I’ve removed stuff from them using the functions.php as follows:

if ( ! in_array( 'administrator', $current_user->roles ) ) :
        // remove any other stuff here - something like this.
        remove_menu_page('edit.php');
        // Media
        remove_menu_page('upload.php');
        // Comments
        remove_menu_page('comments.php');	
        // Tools
        remove_menu_page('tools.php');

I’d like to do the same so they can’t access the Contact form page in wp-admin, but can’t for the life of me get that to work!

I’ve tried (‘admin.php’) and (‘admin.php?page=wcpf7’) to no avail.

Please can someone help?