removed donation button

Reasons:
-reduces get requests and makes the websites only external request(s) become "google font api (roboto)".
-no risk for question to whom the donation button goes
-is maybe etiquette to remove such from forks

index.html

@@ -69,16 +69,6 @@ <h1 class='group-header'>Group D</h1>
 <script src="./d3.js"></script>
 <script src="./swoopy-drag.js"></script>
 <script src="./script.js"></script>
-<div style="margin-left:650px">
-    <form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
-        <input type="hidden" name="cmd" value="_donations" />
-        <input type="hidden" name="business" value="QBU7Y694UU6QW" />
-        <input type="hidden" name="currency_code" value="USD" />
-        <input type="submit" value="Donate to original creator" name="submit" title="PayPal - The safer, easier way to pay online!" alt="Donate with PayPal button" />
-        <img alt="" border="0" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1" />
-    </form>
-
-</div>
 
 </body>
 </html>