hg: jdk/sandbox: 8199470: Remove unused property file.encoding.pkg

[chris.hegarty at oracle.com]

Changeset: b43edd41622d
Author:    rriggs
Date:      2018-03-13 12:46 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/b43edd41622d

8199470: Remove unused property file.encoding.pkg
Reviewed-by: bpb, sherman

! src/demo/share/java2d/J2DBench/src/j2dbench/ResultSet.java
! src/java.base/share/native/libjava/System.c
! src/java.base/windows/native/libjava/java_props_md.c