RFR: 8352015: LIBVERIFY_OPTIMIZATION remove special optimization settings

[Matthias Baesken]

On Linux there are some special settings for LIBVERIFY_OPTIMIZATION that are most likely not needed any more and could be removed.
The removal (on Linux) brings the lib optimization level de facto from LOW to HIGH.

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Commit messages:
 - JDK-8352015

Changes: https://git.openjdk.org/jdk/pull/24054/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24054&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8352015
  Stats: 6 lines in 1 file changed: 0 ins; 5 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24054.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24054/head:pull/24054

PR: https://git.openjdk.org/jdk/pull/24054