hg: jdk/jdk: 8245623: Remove unused code in sun/nio/fs after Solaris removal

[claes.redestad at oracle.com]

Changeset: eec3610c792d
Author:    redestad
Date:      2020-05-22 14:21 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/eec3610c792d

8245623: Remove unused code in sun/nio/fs after Solaris removal
Reviewed-by: alanb

! src/java.base/unix/classes/sun/nio/fs/UnixChannelFactory.java
! src/java.base/unix/classes/sun/nio/fs/UnixException.java
! src/java.base/unix/classes/sun/nio/fs/UnixFileSystemProvider.java
! src/java.base/unix/classes/sun/nio/fs/UnixUserPrincipals.java