[code-reflection] RFR: Replace methods "create" in Op subclasses by constructors [v3]

[Mourad Abbay]

> By using flexible constructor bodies feature, we get rid of methods "create" in Op subclasses and we replace it with constructors. We also remove unused constructors and methods in Op subclasses.

Mourad Abbay has updated the pull request incrementally with one additional commit since the last revision:

  Apply suggestion

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

Changes:
  - all: https://git.openjdk.org/babylon/pull/584/files
  - new: https://git.openjdk.org/babylon/pull/584/files/372cc17b..49d4367b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=584&range=02
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=584&range=01-02

  Stats: 14 lines in 1 file changed: 7 ins; 7 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/584.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/584/head:pull/584

PR: https://git.openjdk.org/babylon/pull/584