sponsor: prospectus: rm gdoc registration link

Author: tai271828

src/templates/pycontw-2020/contents/en/sponsor/sponsor.html

@@ -27,7 +27,6 @@ <h1>Why Sponsorship</h1>
 <p>Our sponsorship partners are what makes PyCon Taiwan possible! We work closely with our partners in order to optimize what PyCon Taiwan can offer. Look for your participation!</p>
 
 <p>See our <a href="{{ prospectus_url }}">full prospectus</a> for Sponsorship Package</p>
-<p><a href="{{ SPONSOR_FORM_URL }}" target="_blank" rel="noopener">Click</a> to register Sponsorship</p>
 <p><a href="mailto:[email protected]" target="_blank" rel="noopener">Talk</a> us about sponsorship</p>
 
 {% endblock content %}