RFR: 8358283: Inconsistent failure mode for MetaspaceObj::operator new(size_t, MemTag)

[Igor Veresov]

Remove unnecessary no throw

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Commit messages:
 - Remove unnessesary nothrow

Changes: https://git.openjdk.org/jdk/pull/25596/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25596&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358283
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25596.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25596/head:pull/25596

PR: https://git.openjdk.org/jdk/pull/25596