[vectorIntrinsics+compress] RFR: 8274936: Remove compress(m, v) and expand(m, v) flavor from Vector API

[Sandhya Viswanathan]

Remove compress(m, v) and expand(m, v) flavor from Vector API as discussed during API review.

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Commit messages:
 - 8274936: Remove compress(m, v) and expand(m, v) flavor from Vector API

Changes: https://git.openjdk.java.net/panama-vector/pull/147/files
 Webrev: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=147&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274936
  Stats: 3471 lines in 71 files changed: 0 ins; 3471 del; 0 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/147.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/147/head:pull/147

PR: https://git.openjdk.java.net/panama-vector/pull/147