RFR: 8343467: Remove unnecessary @SuppressWarnings annotations (security) [v2]

[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 incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - Update copyright years.
 - Merge branch 'master' into SuppressWarningsCleanup-security
 - Merge branch 'master' into SuppressWarningsCleanup-security
 - Remove unnecessary @SuppressWarnings annotations.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/21844/files
  - new: https://git.openjdk.org/jdk/pull/21844/files/940bb406..d52cf7e1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21844&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21844&range=00-01

  Stats: 3245 lines in 143 files changed: 2078 ins; 749 del; 418 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