8351366: Remove the java.security.debug=scl option

Reviewed-by: hchao, mullan

Author: koushikthirupattur

src/java.base/share/classes/java/security/SecureClassLoader.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
@@ -25,8 +25,6 @@
 
 package java.security;
 
-import sun.security.util.Debug;
-
 import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
@@ -181,13 +179,6 @@ protected PermissionCollection getPermissions(CodeSource codesource)
         return new Permissions(); // ProtectionDomain defers the binding
     }
 
-    /*
-     * holder class for the static field "debug" to delay its initialization
-     */
-    private static class DebugHolder {
-        private static final Debug debug = Debug.getInstance("scl");
-    }
-
     /*
      * Returned cached ProtectionDomain for the specified CodeSource.
      */
@@ -209,10 +200,6 @@ public ProtectionDomain apply(CodeSourceKey key) {
                         = SecureClassLoader.this.getPermissions(key.cs);
                 ProtectionDomain pd = new ProtectionDomain(
                         key.cs, perms, SecureClassLoader.this, null);
-                if (DebugHolder.debug != null) {
-                    DebugHolder.debug.println(" getPermissions " + pd);
-                    DebugHolder.debug.println("");
-                }
                 return pd;
             }
         });

src/java.base/share/classes/sun/security/util/Debug.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 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
@@ -104,7 +104,6 @@ public static void Help() {
         System.err.println("pkcs12        PKCS12 KeyStore debugging");
         System.err.println("properties    Security property and configuration file debugging");
         System.err.println("sunpkcs11     SunPKCS11 provider debugging");
-        System.err.println("scl           permissions SecureClassLoader assigns");
         System.err.println("securerandom  SecureRandom");
         System.err.println("ts            timestamping");
         System.err.println("x509          X.509 certificate debugging");