8382487: Remove unnecessary SuppressWarnings annotations in java.desktop

Reviewed-by: serb, aivanov, dmarkov

src/java.desktop/share/classes/com/sun/imageio/stream/StreamCloser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2026, 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
@@ -48,7 +48,6 @@ public class StreamCloser {
     private static WeakHashMap<CloseAction, Object> toCloseQueue;
     private static Thread streamCloser;
 
-    @SuppressWarnings("removal")
     public static void addToQueue(CloseAction ca) {
         synchronized (StreamCloser.class) {
             if (toCloseQueue == null) {

src/java.desktop/share/classes/java/awt/Component.java

@@ -4000,7 +4000,6 @@ public abstract class Component implements ImageObserver, MenuContainer,
          * {@code true}.
          * @see #createBuffers(int, BufferCapabilities)
          */
-        @SuppressWarnings("removal")
         protected FlipBufferStrategy(int numBuffers, BufferCapabilities caps)
             throws AWTException
         {
@@ -8129,7 +8128,6 @@ public abstract class Component implements ImageObserver, MenuContainer,
         return res;
     }
 
-    @SuppressWarnings("removal")
     final Component getNextFocusCandidate() {
         Container rootAncestor = getTraversalRoot();
         Component comp = this;

src/java.desktop/share/classes/java/awt/SequencedEvent.java

@@ -55,7 +55,6 @@ class SequencedEvent extends AWTEvent implements ActiveEvent {
     private static final LinkedList<SequencedEvent> list = new LinkedList<>();
 
     private final AWTEvent nested;
-    @SuppressWarnings("serial") // Not statically typed as Serializable
     private boolean disposed;
     private final LinkedList<AWTEvent> pendingEvents = new LinkedList<>();
 

src/java.desktop/share/classes/javax/imageio/spi/ServiceRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, 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
@@ -718,7 +718,6 @@ class SubRegistry {
         this.category = category;
     }
 
-    @SuppressWarnings("removal")
     public synchronized boolean registerServiceProvider(Object provider) {
         Object oprovider = map.get(provider.getClass());
         boolean present =  oprovider != null;

src/java.desktop/share/classes/javax/swing/JComponent.java

@@ -5070,7 +5070,6 @@ public abstract class JComponent extends Container implements Serializable,
         this.paintingChild = paintingChild;
     }
 
-    @SuppressWarnings("removal")
     void _paintImmediately(int x, int y, int w, int h) {
         Graphics g;
         Container c;

src/java.desktop/share/classes/javax/swing/PopupFactory.java

@@ -865,7 +865,6 @@ public class PopupFactory {
         /**
          * Returns the cache to use for medium weight popups.
          */
-        @SuppressWarnings("unchecked")
         private static List<MediumWeightPopup> getMediumWeightPopupCache() {
             synchronized (MediumWeightPopup.class) {
                 if (cache == null) {

src/java.desktop/share/classes/javax/swing/ToolTipManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, 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
@@ -818,7 +818,6 @@ public final class ToolTipManager extends MouseAdapter implements MouseMotionLis
 
   // Returns:  0 no adjust
   //          >0 adjust by value return
-  @SuppressWarnings("removal")
   private int getPopupFitHeight(Rectangle popupRectInScreen, Component invoker){
     if (invoker != null){
       Container parent;

src/java.desktop/windows/classes/sun/awt/windows/WWindowPeer.java

@@ -108,7 +108,6 @@ public class WWindowPeer extends WPanelPeer implements WindowPeer,
     static List<WWindowPeer> activeWindows = new LinkedList<WWindowPeer>();
     // WComponentPeer overrides
     @Override
-    @SuppressWarnings("unchecked")
     protected void disposeImpl() {
         synchronized (activeWindows) {
             activeWindows.remove(this);