Remove icon from gentle guide link panel

editions/tw5.com/tiddlers/hellothere/thumbnails/HelloThumbnail_-_Gentle_Guide.tid

@@ -2,7 +2,6 @@ background-color: #EDB431
 caption: A Gentle Guide
 color: #fff
 created: 20150325172634195
-icon: <span style="font-weight:bold;background-color:#2a2;border-radius:16em;padding:0 9px 0 9px;">Go</span>
 image: Motovun Jack.jpg
 link: A Gentle Guide to TiddlyWiki
 modified: 20150414071032492