RFR: CODETOOLS-7903065: jcstress: Do not print CPU allocations for NONE affinity mode

[Aleksey Shipilev]

Currently, running with -af NONE, still prints CPU allocation lists. Those are actually fake, and bear no meaning. They should not be printed at all.

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Commit messages:
 - Remove takenCPU mention
 - More complete fix
 - Simple fix

Changes: https://git.openjdk.java.net/jcstress/pull/107/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=107&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7903065
  Stats: 106 lines in 7 files changed: 45 ins; 27 del; 34 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/107.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/107/head:pull/107

PR: https://git.openjdk.java.net/jcstress/pull/107