Add this in your functions.php and optimize some simple things

functions.php

<?php
/**
 * WordPress Optimizing
 */

// Remove Query String from Static Resources
function remove_cssjs_ver( $src ) {
	if( strpos( $src, '?ver=' ) )
		$src = remove_query_arg( 'ver', $src );
	return $src;
}
add_filter( 'style_loader_src', 'remove_cssjs_ver', 10, 2 );
add_filter( 'script_loader_src', 'remove_cssjs_ver', 10, 2 );

// Remove other unwanted scripts
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
remove_action( 'admin_print_styles', 'print_emoji_styles' );