RFR: 8273144: Remove unused top level "Sample Collection Set Candidates" logging [v2]

[Thomas Schatzl]

> Hi all,
> 
>   please review this trivial(?) removal of a log message and associated unused code.
> 
> This is a leftover from JDK-8017163 and the merge with the BatchedGangTask API (there is a "Sample CSet Candidates" log which is used in post evacuation phase 2).
> 
> Testing: changed TestGCLogMessages test case, compilation
> 
> Thanks,
>   Thomas

Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:

  Fixes

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5304/files
  - new: https://git.openjdk.java.net/jdk/pull/5304/files/09d86250..7241cfc9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5304&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5304&range=00-01

  Stats: 68 lines in 1 file changed: 39 ins; 26 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5304.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5304/head:pull/5304

PR: https://git.openjdk.java.net/jdk/pull/5304