Do not let talkback read "Item added to home screen" after an app is added to home screen.

Bug: 379643701
Test: manual
Flag: EXEMPT talkback bug fix
Change-Id: I29082c2db33e0a5d20f07e7ecc4a71448337104e
diff --git a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
index 814d142..548bc35 100644
--- a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
+++ b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
@@ -415,7 +415,6 @@
                         screenId, coordinates[0], coordinates[1]);
 
                 bindItem(info, accessibility, finishCallback);
-                announceConfirmation(R.string.item_added_to_workspace);
             } else if (item instanceof PendingAddItemInfo) {
                 PendingAddItemInfo info = (PendingAddItemInfo) item;
                 if (info instanceof PendingAddWidgetInfo widgetInfo