Revert "added icon to header"

This reverts commit a897e521c0.

index.html

@@ -14,7 +14,6 @@
             <div class="mdl-layout__header-row">
                 <!-- Title -->
                 <span class="mdl-layout-title">Moonlight</span>
-                <img src="icons/icon128.png" style="width:64px;height:64px;padding-left: 20px">
                 <!-- Add spacer, to align navigation to the right -->
                 <div class="mdl-layout-spacer"></div>
             </div>