git: openjdk/jdk: 8260406: Do not copy pure java source code to gensrc

[Magnus Ihse Bursie]

Changeset: 8d2f77fd
Author:    Magnus Ihse Bursie <ihse at openjdk.org>
Date:      2021-01-26 14:08:06 +0000
URL:       https://git.openjdk.java.net/jdk/commit/8d2f77fd

8260406: Do not copy pure java source code to gensrc

Reviewed-by: alanb, erikj

! make/modules/java.base/gensrc/GensrcCharacterData.gmk
= src/java.base/share/classes/java/lang/CharacterDataPrivateUse.java
= src/java.base/share/classes/java/lang/CharacterDataUndefined.java