git: openjdk/jdk: 8313403: Remove unused 'mask' field from JFormattedTextField

[Alexey Ivanov]

Changeset: b65f4f72
Author:    Alexey Ivanov <aivanov at openjdk.org>
Date:      2023-09-25 18:06:53 +0000
URL:       https://git.openjdk.org/jdk/commit/b65f4f7220f53b250846c19ca6378450b5c9a61a

8313403: Remove unused 'mask' field from JFormattedTextField

Reviewed-by: prr, honkar

! src/java.desktop/share/classes/javax/swing/JFormattedTextField.java