RFR: 8266264: mark hotspot compiler/eliminateAutobox tests which ignore VM flags

[Igor Ignatyev]

Hi all,

could you please review this small and trivial patch that adds `@requires vm.flagless` to `compiler/eliminateAutobox` tests that ignore VM flags?

Thanks,
-- Igor

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Commit messages:
 - 8266264

Changes: https://git.openjdk.java.net/jdk/pull/3783/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3783&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266264
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3783.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3783/head:pull/3783

PR: https://git.openjdk.java.net/jdk/pull/3783