hg: jdk/sandbox: 8194899: Remove unused sun.net classes

[chris.hegarty at oracle.com]

Changeset: 29dff19ce132
Author:    bpb
Date:      2018-07-05 07:22 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/29dff19ce132

8194899: Remove unused sun.net classes
Reviewed-by: alanb, mchung, dfuchs, chegar, michaelm

- src/java.base/share/classes/sun/net/NetworkServer.java
- src/java.base/share/classes/sun/net/URLCanonicalizer.java