--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/Flags.java	2020-04-15 18:47:44.000000000 +0530
+++ /dev/null	2020-04-15 18:47:44.000000000 +0530
@@ -1,75 +0,0 @@
-/*
- * Copyright (c) 2010, 2013, 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.ir;
-
-/**
- * Interface implemented by all nodes that have flags in
- * a lexical context. This is needed as we sometimes have to save
- * the setting of flags in the lexical context until a block
- * is completely finished and its final version (after multiple
- * copy on writes) is placed in the lexical context
- *
- * @param <T> lexical context node that can have flags set during code generation
- */
-public interface Flags<T extends LexicalContextNode> {
-
-    /**
-     * Get all flags of a LexicalContextNode
-     * @return flags
-     */
-    public int getFlags();
-
-    /**
-     * Check if a flag is set in a lexical context node
-     * @param flag flag to check
-     * @return flags
-     */
-    public boolean getFlag(int flag);
-
-    /**
-     * Clear a flag of a LexicalContextNode
-     * @param lc lexical context
-     * @param flag flag to clear
-     * @return the new LexicalContext node if flags were changed, same otherwise
-     */
-    public T clearFlag(final LexicalContext lc, int flag);
-
-    /**
-     * Set a flag of a LexicalContextNode
-     * @param lc lexical context
-     * @param flag flag to set
-     * @return the new LexicalContext node if flags were changed, same otherwise
-     */
-    public T setFlag(final LexicalContext lc, int flag);
-
-    /**
-     * Set all flags of a LexicalContextNode, overwriting previous flags
-     * @param lc lexical context
-     * @param flags new flags value
-     * @return the new LexicalContext node if flags were changed, same otherwise
-     */
-    public T setFlags(final LexicalContext lc, int flags);
-}