Remove hextris

I noticed that hextris did calls to twitter and others. This isn't in line with what Parley wants to represent.
Maybe another game can be added, but this is just the removal.

index.html

@@ -93,18 +93,6 @@
 								</div>
 							</div>
 						</section>
-						<section>
-							<a href="https://hextris.parley.be" target="_blank" class="image"><img src="images/pic-hextris.jpg" alt="" data-position="25% 25%" /></a>
-							<div class="content">
-								<div class="inner">
-									<h2>Hextris</h2>
-									<p>Hextris is a fast paced puzzle game. Because a bit of procrastination every now and then is healthy.</p>
-									<ul class="actions">
-										<li><a href="https://hextris.parley.be" target="_blank" class="button">Go to Hextris ></a></li>
-									</ul>
-								</div>
-							</div>
-						</section>
 					</section>
 
 				<!-- Two -->