git: openjdk/jdk21: 8311183: Remove unused mapping test files

[Naoto Sato]

Changeset: 773bb0a7
Author:    Naoto Sato <naoto at openjdk.org>
Date:      2023-07-07 15:48:20 +0000
URL:       https://git.openjdk.org/jdk21/commit/773bb0a7f110bd58359498334d7084eaca897e3a

8311183: Remove unused mapping test files

Reviewed-by: lancea
Backport-of: d072c40ff175c653802796673baef47e24038891

- test/jdk/sun/nio/cs/mapping/JIS0201.b2c.private
- test/jdk/sun/nio/cs/mapping/JIS0208.b2c.private
- test/jdk/sun/nio/cs/mapping/JIS0212.b2c.private
- test/jdk/sun/nio/cs/mapping/MS932.b2c.private
- test/jdk/sun/nio/cs/mapping/MS932DB.b2c.private
- test/jdk/sun/nio/cs/mapping/MS932DB.c2b.private