QmlDesigner: Edit 3D view icon update

Added icon for spot light gizmo and updated directional light icon.
Removed icons that are no longer needed on puppet side.

Change-Id: Id1e72c80e122250f7edc8a69a0e5720e755b96fc
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

share/qtcreator/qml/qmlpuppet/mockfiles/ToolBarButton.qml

@@ -41,8 +41,8 @@ Rectangle {
     property var _buttonGroupArray: []
 
     id: root
-    width: img.width + 5
-    height: img.height + 5
+    width: 16
+    height: 16
     color: root.selected ? "#aa000000" : (mouseArea.containsMouse ? "#44000000" : "#00000000")
     radius: 3
 
@@ -65,13 +65,6 @@ Rectangle {
         delay: 1000
     }
 
-    Image {
-        id: img
-        anchors.centerIn: parent
-        source: root.selected ? "qrc:///qtquickplugin/mockfiles/images/" + root.tool + "_selected.png"
-                         : "qrc:///qtquickplugin/mockfiles/images/" + root.tool + "_active.png"
-    }
-
     Shortcut {
         sequence: root.currentShortcut
         onActivated: mouseArea.onClicked(null)