Hide WordPress admin menu items from everybody but Super Admin. Helpful for hiding 'Posts' and 'Comments' menu items when client isn't using blog. Change unfiltered_html to install_plugins if you want to all Admins access to menu items too, etc.

Hide WP Admin Menus

// hide the Posts and Comments menu items from ALL roles except Super Admin
// https://codex.wordpress.org/Roles_and_Capabilities
function remove_menus () {
    global $menu;
    if( (current_user_can('unfiltered_html')) ) { $restricted = array(__()); }
    else { $restricted = array( __('Posts'),__('Comments')); } // hide these for other roles
    end ($menu);
    while (prev($menu)) {
        $value = explode(' ',$menu[key($menu)][0]);
    
        if(in_array($value[0] != NULL?$value[0]:'' , $restricted)){unset($menu[key($menu)]);
        }
    }
}
add_action('admin_menu', 'remove_menus');