[WP] Admin starting point after some cleanup

admin.php

<?php defined('ABSPATH') or header('Location: /');
/**
 * Cleanup WP admin and unwanted code...
 */
 
// Remove actions
remove_action('welcome_panel',             'wp_welcome_panel');
remove_action('dashboard_primary',         'wp_dashboard_primary');
remove_action('admin_color_scheme_picker', 'admin_color_scheme_picker');

// Add actions
add_action('init',                  'remove_comment_support');
add_action('admin_menu',            'clean_admin_menu');
add_action('admin_bar_menu',        'clean_admin_menubar', 999);
add_action('wp_dashboard_setup',    'remove_dashboard_widgets', 9999);
add_action('admin_init',            'disable_yoast_notifications', 999);
//add_action('admin_enqueue_scripts', 'admin_style');

// Add filters
add_filter('admin_head',               'clean_admin_submenu', 999);
add_filter('admin_head',               'remove_contextual_tabs', 999);
add_filter('admin_head',               'custom_admin_styles', 999);
add_filter('gettext',                  'greeting', 10, 3);
add_filter('admin_footer_text',        '__return_false', 9999);
add_filter('update_footer',            'text_version', 9999);
add_filter('acf/settings/save_json',   'acf_json');
add_filter('acf/settings/load_json',   'acf_json_load');
add_filter('user_contactmethods',      'remove_user_contact_methods');
add_filter('option_show_avatars',      '__return_false');
add_filter('editable_roles',           'acl_filter_editable_roles');

// Required plugins
if(!function_exists('acf_add_options_page')){
  add_action('admin_notices', 'plugin_dependency_notice');
}

/**
 * Theme dependencies
 */
function plugin_dependency_notice(){
  ?>
  <div class="notice notice-error is-dismissible">
    <p>You must install <a href="https://www.advancedcustomfields.com/pro/" target="_blank">Advanced Custom Fields PRO</a> for this theme to function properly.</p>
  </div>
  <?php
}


/**
 * Yoast SEO Disable Redirect Notifications for
 * Posts or Pages: Moved to Trash
 */
add_filter('wpseo_enable_notification_post_trash', '__return_false');


/**
 * Yoast SEO Disable Redirect Notifications for
 * Posts and Pages: Change URL
 */
add_filter('wpseo_enable_notification_post_slug_change', '__return_false');


/**
 * Yoast SEO Disable Redirect Notifications for
 * Taxonomies: Moved to Trash
 */
add_filter('wpseo_enable_notification_term_delete', '__return_false');


/**
 * Yoast SEO Disable Redirect Notifications for
 * Taxonomies: Change URL
 */
add_filter('wpseo_enable_notification_term_slug_change', '__return_false');


/**
 * Lower Yoast SEO metabox priority
 */
add_filter('wpseo_metabox_prio', function($html) {
  return 'low';
});


/**
 * Disable yoast notifications
 */
function disable_yoast_notifications() {
  if(class_exists('Yoast_Notification_Center')) {
    $notification_center = Yoast_Notification_Center::get();
    $notification_center->deactivate_hook();
  }
}


/**
 * Save acf json
 */
function acf_json($path) {
  $path = get_stylesheet_directory().'/acf-json';

  return $path;
}


/**
 * Load ACF json
 * @param $paths
 *
 * @return array
 */
function acf_json_load( $paths ) {

	unset($paths[0]);
	$paths[] = get_stylesheet_directory() . '/acf-json';

	return $paths;
}


/**
 * Change default greeting
 */
function greeting($translated_text, $text, $domain) {
  $new_message = str_replace('Howdy', 'Welcome', $text);
  
  return $new_message;
}


/**
 * Remove support
 */
function remove_comment_support() {
  $post_types = get_post_types();
  foreach($post_types as $type){
    remove_post_type_support($type, 'comments');
    remove_post_type_support($type, 'trackbacks');
  }
}


/**
 * Admin stylesheet
 */
function admin_style() {
  wp_enqueue_style('admin-styles', get_template_directory_uri().'/css/admin.css');
}


/**
 * Clean admin menu
 */
function clean_admin_menu() {
  remove_menu_page('edit.php');
  remove_menu_page('edit-comments.php');
}


/**
 * Clean admin submenu
 */
function clean_admin_submenu() {
  ?>
  <style>
    #adminmenu .toplevel_page_wpseo_dashboard ul li:last-child,
    #adminmenu .menu-icon-appearance ul .hide-if-no-customize {display:none}
  </style>
  <?php
}


/**
 * Clean admin menubar
 */
function clean_admin_menubar($wp_admin_bar) {
	$wp_admin_bar->remove_node('wp-logo');
	$wp_admin_bar->remove_menu('new-post');
	$wp_admin_bar->remove_menu('comments');
	$wp_admin_bar->remove_menu('customize');
}


/**
 * Admin styles in head
 */
function custom_admin_styles() {
	echo "<style>
	#yoast-helpscout-beacon, .yoast_premium_upsell,
	.wp-admin.toplevel_page_wpseo_dashboard .yoast-sidebar,
  .wp-admin.seo_page_wpseo_titles .yoast-sidebar,
  .wp-admin.seo_page_wpseo_search_console .yoast-sidebar,
  .wp-admin.seo_page_wpseo_social .yoast-sidebar,
  .wp-admin.seo_page_wpseo_tools .yoast-sidebar { display:none }
  </style>";
}


/**
 * Remove user/author meta fields
 */
function remove_user_contact_methods($methods){
  $methods = array(); // Return blank array to remove all contact methods
  return $methods;
}


/**
 * Users cannot create admins unless they are one
 */
function acl_filter_editable_roles( $all_roles ) {
  if(!current_user_can('administrator')) {
    unset($all_roles['administrator']);
  }

  return $all_roles;
}


/**
 * Remove dashboard widgets
 */
function remove_dashboard_widgets() {
	remove_meta_box('dashboard_primary', 'dashboard', 'side');
	remove_meta_box('dashboard_quick_press', 'dashboard', 'side');
	remove_meta_box('wpseo-dashboard-overview', 'dashboard', 'normal');
}


/**
 * Remove admin help tabs
 */
function remove_contextual_tabs(){
  $screen = get_current_screen();
  $screen->remove_help_tabs();
}


/** 
 * Version display
 */
function text_version() {
  global $wp_version;
  echo '<small>v'. $wp_version.'</small>';
}