RFR: CODETOOLS-7902981: jcstress: Remove trailing whitespaces in the console log

[Aleksey Shipilev]

There a couple of places where trailing whitespaces take a lot of space and induce wrapping where it is not expected.

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Commit messages:
 - CODETOOLS-7902981: jcstress: Remove trailing whitespaces in the console log

Changes: https://git.openjdk.java.net/jcstress/pull/83/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=83&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902981
  Stats: 6 lines in 2 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/83.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/83/head:pull/83

PR: https://git.openjdk.java.net/jcstress/pull/83