restore slide-out remove window animation

--update it to Kirigami.Icon infrastructure

plasmoid/package/contents/ui/task/TaskIcon.qml

@@ -80,9 +80,6 @@ Item {
         id: taskIconItem
         anchors.fill: parent
         //roundToIconSize: false
-        //! Trying to provide crisp icons for regular and zoomed size and smooth appearance in-between
-        //! bug:432477
-        //smooth: size !== taskItem.abilities.metrics.iconSize && size !== (taskItem.abilities.metrics.iconSize*taskItem.abilities.parabolic.zoom)
         source: decoration
         visible: !badgesLoader.active
 

plasmoid/package/contents/ui/task/animations/RemoveWindowFromGroupAnimation.qml

@@ -24,6 +24,8 @@ import QtGraphicalEffects 1.0
 import org.kde.plasma.plasmoid 2.0
 import org.kde.plasma.core 2.0 as PlasmaCore
 
+import org.kde.kirigami 2.0 as Kirigami
+
 import org.kde.latte.core 0.2 as LatteCore
 
 /////Removing a Window from a group////
@@ -62,10 +64,26 @@ Item{
             id: removeTask
             width: taskIcon.width
             height: taskIcon.height
-
             visible: false
 
-            LatteCore.IconItem{
+            //! Shadow
+            Loader{
+                id: tempTaskShadow
+                anchors.fill: tempRemoveIcon
+                active: taskItem.abilities.myView.itemShadow.isEnabled && graphicsSystem.isAccelerated
+
+                sourceComponent: DropShadow{
+                    anchors.fill: parent
+                    color: "#ff080808"
+                    fast: true
+                    samples: 2 * radius
+                    source: tempRemoveIcon
+                    radius: taskItem.abilities.myView.itemShadow.size
+                    verticalOffset: 2
+                }
+            }
+
+            Kirigami.Icon{
                 id: tempRemoveIcon
                 anchors.rightMargin: root.location === PlasmaCore.Types.LeftEdge ? taskItem.abilities.metrics.margin.thickness : 0
                 anchors.leftMargin: root.location === PlasmaCore.Types.RightEdge ? taskItem.abilities.metrics.margin.thickness : 0
@@ -81,26 +99,11 @@ Item{
 
                 width: taskIconItem.width
                 height: width
-                visible: taskItem.abilities.myView.itemShadow.isEnabled ? false : true
 
-                source: taskIconItem.lastValidSourceName
+                source: taskIconItem.source
             }
 
-            Loader{
-                id: tempTaskShadow
-                anchors.fill: tempRemoveIcon
-                active: taskItem.abilities.myView.itemShadow.isEnabled && graphicsSystem.isAccelerated
 
-                sourceComponent: DropShadow{
-                    anchors.fill: parent
-                    color: "#ff080808"
-                    fast: true
-                    samples: 2 * radius
-                    source: tempRemoveIcon
-                    radius: taskItem.abilities.myView.itemShadow.size
-                    verticalOffset: 2
-                }
-            }
 
             Colorize{
                 source: tempRemoveIcon