RFR: 8362336: Revert changes in metaspaceShared.cpp done via JDK-8356807

[Calvin Cheung]

The changes in `metaspaceShared.cpp` for JDK-8356807 is causing bootcycle prebuilt failures. Therefore, reverting those changes.

Testing: tiers 1 - 3, builds-tier4.

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Commit messages:
 - 8362336: Revert changes in metaspaceShared.cpp done via JDK-8356807

Changes: https://git.openjdk.org/jdk/pull/26344/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26344&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8362336
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/26344.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26344/head:pull/26344

PR: https://git.openjdk.org/jdk/pull/26344