git: openjdk/jdk-sandbox: simpleserver: simpleserver: update unsupported methods, remove duplicate symlink check

[Julia Boes]

Changeset: 4b101926
Author:    Julia Boes <julia.boes at oracle.com>
Date:      2021-06-23 17:39:48 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/4b10192667ee50887b0b281b39002fce88aa1be6

simpleserver: update unsupported methods, remove duplicate symlink check

! src/jdk.httpserver/share/classes/sun/net/httpserver/FileServerHandler.java