LinkedHashMap.ChainEntry is not needed for serialization.

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@2916 8db76d5a-ed1c-0410-87a9-c151d255dfc7

user/super/com/google/gwt/emul/java/util/LinkedHashMap.java

diff --git a/user/super/com/google/gwt/emul/java/util/LinkedHashMap.java b/user/super/com/google/gwt/emul/java/util/LinkedHashMap.java
index c1ff2a4..36a50e7 100644
--- a/user/super/com/google/gwt/emul/java/util/LinkedHashMap.java
+++ b/user/super/com/google/gwt/emul/java/util/LinkedHashMap.java
@@ -15,7 +15,6 @@
  */
 package java.util;
 
-import java.io.Serializable;
 
 /**
  * Hash table implementation of the Map interface with predictable iteration
@@ -40,7 +39,7 @@
    * small modifications. Paying a small storage cost only if you use
    * LinkedHashMap and minimizing code size seemed like a better tradeoff
    */
-  private class ChainEntry extends MapEntryImpl<K, V> implements Serializable {
+  private class ChainEntry extends MapEntryImpl<K, V> {
     private transient ChainEntry next;
     private transient ChainEntry prev;