HOW TO: Remove Gutenberg block styles

Since the update to WordPress 5.x, there’s now a new header call made to load Gutenberg styles.
If you’re one of those people that has decided to remove Gutenberg (Classic Editor plugin) you can also remove the styles from auto-loading in your theme:

Add this to your functions.php to remove it:

// REMOVE GUTENBERG STYLES
function lr_deregister_styles() {
wp_dequeue_style( 'wp-block-library' );
}
add_action( 'wp_print_styles', 'lr_deregister_styles', 100 );