RFR: 8343467: Remove unnecessary @SuppressWarnings annotations (security) [v9]

[Archie Cobbs]

> Please review this patch which removes unnecessary `@SuppressWarnings` annotations.

Archie Cobbs has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 12 commits:

 - Merge branch 'master' into SuppressWarningsCleanup-security
 - Remove another unnecessary @SuppressWarnings annotation.
 - Remove another unnecessary @SuppressWarnings annotation.
 - Merge branch 'master' into SuppressWarningsCleanup-security
 - Remove another unnecessary warning suppression.
 - Merge branch 'master' into SuppressWarningsCleanup-security
 - Merge branch 'master' into SuppressWarningsCleanup-security
 - Revert changes to imported sources.
 - Update copyright years.
 - Merge branch 'master' into SuppressWarningsCleanup-security
 - ... and 2 more: https://git.openjdk.org/jdk/compare/cc628a13...649d2f33

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Changes: https://git.openjdk.org/jdk/pull/21844/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21844&range=08
  Stats: 36 lines in 23 files changed: 0 ins; 23 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/21844.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21844/head:pull/21844

PR: https://git.openjdk.org/jdk/pull/21844