RFR: 8351542: LIBMANAGEMENT_OPTIMIZATION remove special optimization settings [v4]

[Matthias Baesken]

> On Linux there are some special settings for LIBMANAGEMENT_OPTIMIZATION that are most likely not needed any more and could be removed.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  do not handle the unused variables stuff in this change

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/23966/files
  - new: https://git.openjdk.org/jdk/pull/23966/files/2aa878e8..979963a9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23966&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23966&range=02-03

  Stats: 6 lines in 2 files changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/23966.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23966/head:pull/23966

PR: https://git.openjdk.org/jdk/pull/23966