[code-reflection] Integrated: Hat simplify vector select phase

[Gary Frost]

Simplified Vector load/store phases and load and store ops.

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Commit messages:
 - Removed dead code from VectorOps
 - Initial refactor

Changes: https://git.openjdk.org/babylon/pull/808/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=808&range=00
  Stats: 226 lines in 9 files changed: 37 ins; 122 del; 67 mod
  Patch: https://git.openjdk.org/babylon/pull/808.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/808/head:pull/808

PR: https://git.openjdk.org/babylon/pull/808