8245922: [macos] Taskbar.Feature.ICON_BADGE_NUMBER no longer supported on MacOS

src/java.desktop/macosx/classes/apple/laf/JRSUIUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -36,17 +36,12 @@ public final class JRSUIUtils {
 
     static boolean isLeopard = isMacOSXLeopard();
     static boolean isSnowLeopardOrBelow = isMacOSXSnowLeopardOrBelow();
-    static boolean isCatalinaOrAbove = isMacOSXCatalinaOrAbove();
     static boolean isBigSurOrAbove = isMacOSXBigSurOrAbove();
 
     public static boolean isMacOSXBigSurOrAbove() {
         return currentMacOSXVersionMatchesGivenVersionRange(16, true, false, true);
     }
 
-    static boolean isMacOSXCatalinaOrAbove() {
-        return currentMacOSXVersionMatchesGivenVersionRange(15, true, false, true);
-    }
-
     static boolean isMacOSXLeopard() {
         return isCurrentMacOSXVersion(5);
     }
@@ -84,12 +79,6 @@ static boolean currentMacOSXVersionMatchesGivenVersionRange(
         return false;
     }
 
-    public static class TaskBar {
-        public static boolean isIconBadgeSupported() {
-            return !isCatalinaOrAbove;
-        }
-    }
-
     public static class TabbedPane {
         public static boolean useLegacyTabs() {
             return isLeopard;

src/java.desktop/macosx/classes/sun/lwawt/macosx/CTaskbarPeer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,14 +25,12 @@
 
 package sun.lwawt.macosx;
 
+import com.apple.eawt.Application;
 import java.awt.Image;
 import java.awt.PopupMenu;
 import java.awt.Taskbar.Feature;
 import java.awt.peer.TaskbarPeer;
 
-import apple.laf.JRSUIUtils;
-import com.apple.eawt.Application;
-
 final public class CTaskbarPeer implements TaskbarPeer {
 
     CTaskbarPeer() {}
@@ -42,7 +40,6 @@ public boolean isSupported(Feature feature) {
         switch(feature) {
             case ICON_BADGE_TEXT:
             case ICON_BADGE_NUMBER:
-                return JRSUIUtils.TaskBar.isIconBadgeSupported();
             case ICON_IMAGE:
             case MENU:
             case PROGRESS_VALUE: