hg: jdk/sandbox: 8231314: java.time serialization warning cleanup

[chris.hegarty at oracle.com]

Changeset: 628c12967b02
Author:    rriggs
Date:      2019-09-26 11:10 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/628c12967b02

8231314: java.time serialization warning cleanup
Reviewed-by: chegar, naoto, plevart

! src/java.base/share/classes/java/time/Ser.java
! src/java.base/share/classes/java/time/chrono/AbstractChronology.java
! src/java.base/share/classes/java/time/chrono/Ser.java
! src/java.base/share/classes/java/time/zone/Ser.java