--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/AstDeserializer.java	2020-04-15 18:49:38.000000000 +0530
+++ /dev/null	2020-04-15 18:49:38.000000000 +0530
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2010, 2014, 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
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-package jdk.nashorn.internal.runtime;
-
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.util.zip.InflaterInputStream;
-import jdk.nashorn.internal.ir.FunctionNode;
-
-/**
- * This static utility class performs deserialization of FunctionNode ASTs from a byte array.
- * The format is a standard Java serialization stream, deflated.
- */
-final class AstDeserializer {
-    static FunctionNode deserialize(final byte[] serializedAst) {
-        return AccessController.doPrivileged(new PrivilegedAction<FunctionNode>() {
-            @Override
-            public FunctionNode run() {
-                try {
-                    return (FunctionNode)new ObjectInputStream(new InflaterInputStream(
-                        new ByteArrayInputStream(serializedAst))).readObject();
-                } catch (final ClassNotFoundException | IOException e) {
-                    // This is internal, can't happen
-                    throw new AssertionError("Unexpected exception deserializing function", e);
-                }
-            }
-        });
-    }
-}