RFR: JDK-8278014: [vectorapi] Remove test run script [v2]

[Paul Sandoz]

> Remove Vector API scripts for building and running tests. `jtreg` should be used instead.
> 
> Also updated the test generation script to remove options that assume mercurial as the code repository.

Paul Sandoz has updated the pull request incrementally with one additional commit since the last revision:

  Update copywrite year.

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6621/files
  - new: https://git.openjdk.java.net/jdk/pull/6621/files/65fa1fbe..4a5bf3b9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6621&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6621&range=00-01

  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6621.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6621/head:pull/6621

PR: https://git.openjdk.java.net/jdk/pull/6621