8357226: Remove unnecessary List.indexOf from RepaintManager.removeInvalidComponent

Reviewed-by: azvegint, serb

Author: Andrey Turbanov

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

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2025, 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
@@ -389,11 +389,8 @@ public synchronized void removeInvalidComponent(JComponent component) {
             delegate.removeInvalidComponent(component);
             return;
         }
-        if(invalidComponents != null) {
-            int index = invalidComponents.indexOf(component);
-            if(index != -1) {
-                invalidComponents.remove(index);
-            }
+        if (invalidComponents != null) {
+            invalidComponents.remove(component);
         }
     }