steppohub

add_action('admin_init', 'wpse_136058_debug_admin_menu');
function wpse_136058_debug_admin_menu() {
    echo '<pre>'.print_r($GLOBALS['menu'], true).'</pre>';
} // function wpse_136058_debug_admin_menu

steppohub

// hide specific pages from the All pages list, choose ids manually!

add_action( 'pre_get_posts' ,'exclude_this_page' );
function exclude_this_page( $query ) {
	if( !is_admin() )
		return $query;

	global $pagenow;

	if( 'edit.php' == $pagenow && ( get_query_var('post_type') && 'page' == get_query_var('post_type') ) )

steppohub

// disable default dashboard widgets
function disable_default_dashboard_widgets() {

	remove_meta_box('dashboard_right_now', 'dashboard', 'core');
	remove_meta_box('dashboard_recent_comments', 'dashboard', 'core');
	remove_meta_box('dashboard_incoming_links', 'dashboard', 'core');
	remove_meta_box('dashboard_plugins', 'dashboard', 'core');
	remove_meta_box('dashboard_activity', 'dashboard', 'normal');
	remove_meta_box('dashboard_quick_press', 'dashboard', 'core');
	remove_meta_box('dashboard_recent_drafts', 'dashboard', 'core');

steppohub

// change default auto embed size
add_filter('embed_defaults','aa99_embed_defaults');
function aa99_embed_defaults($defaults) {
   $defaults['width']=416;
   return $defaults;
}

steppohub

function remove_menus(){

  remove_menu_page( 'index.php' );                  //Dashboard
  remove_menu_page( 'edit.php' );                   //Posts
  remove_menu_page( 'upload.php' );                 //Media
  remove_menu_page( 'edit.php?post_type=page' );    //Pages
  remove_menu_page( 'edit-comments.php' );          //Comments
  remove_menu_page( 'themes.php' );                 //Appearance
  remove_menu_page( 'plugins.php' );                //Plugins
  remove_menu_page( 'users.php' );                  //Users

steppohub

// remove help thingo

add_filter( 'contextual_help', 'wpse50723_remove_help', 999, 3 );
function wpse50723_remove_help($old_help, $screen_id, $screen){
    $screen->remove_help_tabs();
    return $old_help;
}

// remove other admin stuff