RFR: 8331196: vector api: Remove unnecessary index check in Byte/ShortVector.fromArray/fromArray0Template

[Hamlin Li]

Hi,
Can you help to review this simple patch?
Some index check in Byte/ShortVector.fromArray/fromArray0Template seems not necessary, could be removed.
Thanks

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Commit messages:
 - Initial commit

Changes: https://git.openjdk.org/jdk/pull/18977/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18977&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331196
  Stats: 36 lines in 3 files changed: 0 ins; 12 del; 24 mod
  Patch: https://git.openjdk.org/jdk/pull/18977.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18977/head:pull/18977

PR: https://git.openjdk.org/jdk/pull/18977