GUAC-932: Remove excessive display logic from document structure.

guacamole/src/main/webapp/app/index/styles/ui.css

@@ -260,7 +260,7 @@ div.section {
     border-left: 1px dotted rgba(0, 0, 0, 0.25);
 }
 
-.group.balancer > .caption .icon.type {
+.group.balancer:not(.empty) > .caption .icon.type {
     display: inline-block;
     background-image: url('images/protocol-icons/guac-monitor.png');
 }