RFR: 8295994: Remove left over InetAddressContainer class

[Michael McMahon]

Hi,

Can I get the following trivial change reviewed please? It removes an unreferenced class
that was left over from a previous cleanup.

Thanks,
Michael

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Commit messages:
 - deleted InetAddressContainer

Changes: https://git.openjdk.org/jdk/pull/10886/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10886&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295994
  Stats: 30 lines in 1 file changed: 0 ins; 30 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10886.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10886/head:pull/10886

PR: https://git.openjdk.org/jdk/pull/10886