Tips on Customizing Htaccess File Editor – Easily Edit, Backup, Restore .htaccess file

How to Hide Htaccess File Editor Admin Menus

function plt_hide_htaccess_file_editor_menus() {
	//Hide the "Htaccess" menu.
	remove_menu_page('htaccess-file-editor');
	//Hide the "Htaccess → Htaccess" menu.
	remove_submenu_page('htaccess-file-editor', 'htaccess-file-editor');
	//Hide the "Htaccess → Backup" menu.
	remove_submenu_page('htaccess-file-editor', 'htaccess-file-editor-backup');
}

add_action('admin_menu', 'plt_hide_htaccess_file_editor_menus', 11);

Where do I put this code?

How to Hide the "Latest News From MantraBrain Blog" Dashboard Widget

function plt_hide_htaccess_file_editor_dashboard_widgets() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Remove the "Latest News From MantraBrain Blog" widget.
	remove_meta_box('mantrabrain_dashboard_blog_news', 'dashboard', 'normal');
}

add_action('wp_dashboard_setup', 'plt_hide_htaccess_file_editor_dashboard_widgets', 20);