Backout the following changes due to vector tests failures in tier 2 and later: [JDK-8266054](https://bugs.openjdk.java.net/browse/JDK-8266054) VectorAPI rotate operation optimization
Changes also caused copyright header validation failure in Tier1 due to missing `,` after copyright year in new test. Currently running testing. ------------- Commit messages: - 8271368: [BACKOUT] JDK-8266054 VectorAPI rotate operation optimization Changes: https://git.openjdk.java.net/jdk/pull/4915/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4915&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8271368 Stats: 4438 lines in 57 files changed: 58 ins; 4219 del; 161 mod Patch: https://git.openjdk.java.net/jdk/pull/4915.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4915/head:pull/4915 PR: https://git.openjdk.java.net/jdk/pull/4915
