Removed clear button

Temporary fix to sedate the trolls.

static/index.html

@@ -17,7 +17,6 @@
         <div id="toolbar">
             <input type="color" id="color-picker" value="#000000" />
             <input type="range" id="size-slider" min="1" max="20" value="5" />
-            <button id="clear-btn">Clear</button>
         </div>
         <script src="/script.js"></script>
     </body>