I'm using Contact Form 7 plugin into 2 pages at my website. But there are included js and css files of Contact form 7 plugin into all pages. in source code:
Code:
<script type="text/javascript" src="http://essayhilfe.de/app/plugins/contact-form-7/includes/js/jquery.form.min.js?ver=3.51.0-2014.06.20"></script>
<link rel="stylesheet" id="contact-form-7-css"  href="http://essayhilfe.de/app/plugins/contact-form-7/includes/css/styles.css?ver=4.7"
...