RFR: 8254095: remove jdk.test.lib.Utils::distro() method

[Igor Ignatyev]

Hi all,

could you please review this trivial cleanup? from JBS:
> jdk.test.lib.Utils::distro() is not used by any of the tests and can be removed.

Thanks,
-- Igor

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Commit messages:
 - 8254095: remove jdk.test.lib.Utils::distro() method

Changes: https://git.openjdk.java.net/jdk/pull/532/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=532&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8254095
  Stats: 11 lines in 1 file changed: 0 ins; 11 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/532.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/532/head:pull/532

PR: https://git.openjdk.java.net/jdk/pull/532