RFR: 8367114: Update jdk.test.lib.net.SimpleHttpServer to use SimpleFileServer

[Mahendra Chhipa]

Update SimpleHttpServer class to use SimpleFileServer.

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Commit messages:
 - JDK-8367114: Update jdk.test.lib.net.SimpleHttpServer to use SimpleFileServer

Changes: https://git.openjdk.org/jdk/pull/27608/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27608&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367114
  Stats: 96 lines in 1 file changed: 0 ins; 92 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/27608.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27608/head:pull/27608

PR: https://git.openjdk.org/jdk/pull/27608