RFR: 8305086: G1 Redirty Cards phase printed twice

[Thomas Schatzl]

Hi all,

  please review this change that removes one the printout of the `Redirty Logged Cards` phase with `gc+phases=trace`; there is already one later in the code with `gc+phases=debug`.

Testing: gha, local checking that there is still one printout

Thanks,
  Thomas

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Commit messages:
 - undo move of the gc+phases=debug variant
 - initail version

Changes: https://git.openjdk.org/jdk/pull/13209/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13209&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305086
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13209.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13209/head:pull/13209

PR: https://git.openjdk.org/jdk/pull/13209