remove micro configure button

it was from the time it wasn't possible to configure applets otherwise
now they can be configured with RMB as all the other applets
it introduced some confusing inconsistencies and clutter

BUG:336212

applets/systemtray/package/contents/ui/ExpandedRepresentation.qml

@@ -136,26 +136,6 @@ Item {
             right: parent.right
         }
         text: root.expandedTask ? root.expandedTask.name : ""
-        MouseArea {
-            anchors {
-                right: parent.right
-                verticalCenter: parent.verticalCenter
-            }
-            width: units.iconSizes.small
-            height: width
-
-            PlasmaCore.IconItem {
-                anchors.centerIn: parent
-                source: "configure"
-                width: units.iconSizes.small / 2
-                height: width
-                active: parent.containsMouse
-            }
-
-            onClicked: {
-                root.expandedTask.configure();
-            }
-        }
     }
 
     PlasmaComponents.PageStack {