--- a/src/jdk.internal.le/share/classes/jdk/internal/jline/internal/Preconditions.java	Tue Dec 11 11:45:43 2018 +0530
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,27 +0,0 @@
-/*
- * Copyright (c) 2002-2016, the original author or authors.
- *
- * This software is distributable under the BSD license. See the terms of the
- * BSD license in the documentation provided with this software.
- *
- * http://www.opensource.org/licenses/bsd-license.php
- */
-package jdk.internal.jline.internal;
-
-// Some bits lifted from Guava's ( http://code.google.com/p/guava-libraries/ ) Preconditions.
-
-/**
- * Preconditions.
- *
- * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
- * @since 2.7
- */
-public class Preconditions
-{
-    public static <T> T checkNotNull(final T reference) {
-        if (reference == null) {
-            throw new NullPointerException();
-        }
-        return reference;
-    }
-}