RFR: 8337027: Parallel: Obsolete BaseFootPrintEstimate [v2]

[Albert Mingkun Yang]

> Simple obsoleting a Parallel GC product flag.

Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:

  review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20299/files
  - new: https://git.openjdk.org/jdk/pull/20299/files/59f96d13..10720a6d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20299&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20299&range=00-01

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20299.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20299/head:pull/20299

PR: https://git.openjdk.org/jdk/pull/20299