[gnome-shell] workspace: Remove slot property of WindowPreview

[Florian Müllner <fmuellner src gnome org>]

commit f4fcba74ff0a36afe6d6febd1aa36a2fbc4f48d6
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Tue Jun 2 16:23:59 2020 +0200

    workspace: Remove slot property of WindowPreview
    
    Since the slot property was only accessed by the old WindowOverlays to
    get the position and size of the preview, we can safely stop setting it
    and remove that property now.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1307

 js/ui/workspace.js | 16 ----------------
 1 file changed, 16 deletions(-)
---
diff --git a/js/ui/workspace.js b/js/ui/workspace.js
index 1f40f1d5f5..c7d9d81666 100644
--- a/js/ui/workspace.js
+++ b/js/ui/workspace.js
@@ -231,8 +231,6 @@ var WindowPreview = GObject.registerClass({
         this._delegate = this;
 
         this.slotId = 0;
-        this._slot = [0, 0, 0, 0];
-        this._dragSlot = [0, 0, 0, 0];
         this._stackAbove = null;
 
         this._windowContainer.layout_manager.connect(
@@ -513,17 +511,6 @@ var WindowPreview = GObject.registerClass({
         return this.hasAttachedDialogs();
     }
 
-    set slot(slot) {
-        this._slot = slot;
-    }
-
-    get slot() {
-        if (this.inDrag)
-            return this._dragSlot;
-        else
-            return this._slot;
-    }
-
     deleteAll() {
         const windows = this._windowContainer.layout_manager.getWindows();
 
@@ -732,7 +719,6 @@ var WindowPreview = GObject.registerClass({
     }
 
     _onDragBegin(_draggable, _time) {
-        this._dragSlot = this._slot;
         this.inDrag = true;
         this.hideOverlay(false);
         this.emit('drag-begin');
@@ -1362,7 +1348,6 @@ class Workspace extends St.Widget {
 
             const cloneWidth = cellWidth;
             const cloneHeight = cellHeight;
-            clone.slot = [x, y, cloneWidth, cloneHeight];
 
             if (!clone.positioned) {
                 // This window appeared after the overview was already up
@@ -1559,7 +1544,6 @@ class Workspace extends St.Widget {
             const height = win._overviewHint.height;
             delete win._overviewHint;
 
-            clone.slot = [x, y, width, height];
             clone.positioned = true;
 
             clone.set_position(x, y);