WP - Functions.php - Hide secctions from WP-Admin

functions.php

// FUNCTION THAT HIDES PAGES FROM THE WP-ADMIN
function quitar_paginas_de_administrador()
{
	remove_menu_page('update-core.php');            // Update WP	
	
	remove_menu_page('edit.php');                   // Posts
	remove_menu_page('edit.php?post_type=page');    // Pages
	remove_menu_page('upload.php');                 // Multimedia
	remove_menu_page('link-manager.php');           // Links
	remove_menu_page('edit-comments.php');          // Comments
	
	remove_menu_page('plugins.php');                // Plugins
	remove_menu_page('users.php');                  // Users
	remove_menu_page('options-general.php');        // Preferences
	
	remove_menu_page('themes.php');                 // Appearance
	remove_menu_page('tools.php');                  // Tools	
}

// THE HOOK THAT CALLS THE ABOVE FUNCTION ON "ADMIN_INIT"
add_action( 'admin_init', 'quitar_paginas_de_administrador' );