WordPress hide jQuery migration notice and disable admin email

wp-hide-jquery-migration-notice.php

<?php

/**
 * Hide jQuery Migration notice
 *
 * Temp fix until plugin can be removed
 *
 * @return void
 */
function removes_migrate_warning() {
	?>
	<style type="text/css">
		.jquery-migrate-dashboard-notice {
			display: none !important;
		}
	</style>
	<?php
}

add_filter(
	'admin_footer',
	'removes_migrate_warning',
	99
);

// Stop admin email being sent.
add_filter(
	'jqmh_email_message',
	'_return_null'
);