RFR: 8325932: Replace ATTRIBUTE_NORETURN with direct [[noreturn]]

[Julian Waters]

With clang 13 being the minimum required JDK-8325878, the noreturn bug that requires the ATTRIBUTE_NORETURN workaround now vanishes, and we can use [[noreturn]] directly within HotSpot. We should remove the workaround as soon as possible, given the chance

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Commit messages:
 - Replace ATTRIBUTE_NORETURN with direct [[noreturn]]

Changes: https://git.openjdk.org/jdk/pull/17868/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17868&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325932
  Stats: 73 lines in 5 files changed: 0 ins; 52 del; 21 mod
  Patch: https://git.openjdk.org/jdk/pull/17868.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17868/head:pull/17868

PR: https://git.openjdk.org/jdk/pull/17868