Stops PhoneNumber from implementing Serializable and make it non-final.

java/src/com/google/i18n/phonenumbers/Phonemetadata.java

@@ -172,7 +172,7 @@ public final class Phonemetadata {
       objectOutput.writeBoolean(hasExampleNumber);
       if (hasExampleNumber) {
         objectOutput.writeUTF(exampleNumber_);
-      } 
+      }
     }
 
     public void readExternal(ObjectInput objectInput) throws IOException, ClassNotFoundException {
@@ -503,7 +503,7 @@ public final class Phonemetadata {
       if (hasNationalPrefixTransformRule) {
         objectOutput.writeUTF(nationalPrefixTransformRule_);
       }
-      
+
       objectOutput.writeBoolean(sameMobileAndFixedLinePattern_);
 
       int numberFormatSize = getNumberFormatCount();

java/src/com/google/i18n/phonenumbers/Phonenumber.java

@@ -22,12 +22,9 @@
 
 package com.google.i18n.phonenumbers;
 
-import java.io.Serializable;
-
 public final class Phonenumber {
   private Phonenumber() {}
-  public static final class PhoneNumber implements Serializable {
-    private static final long serialVersionUID = 1;
+  public static class PhoneNumber {
     public enum CountryCodeSource {
       FROM_NUMBER_WITH_PLUS_SIGN,
       FROM_NUMBER_WITH_IDD,