[code-reflection] Integrated: Removing OpWrappers 1 of many

[Gary Frost]

In HAT we wrap babylon ops to minimize churn as the core API's change.  As the code model API has stabalized, we should dismantal these. 

This is the first step.  Refactoring some low OpWrapper calls with raw CodeModel calls.

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

Commit messages:
 - Removing OpWrappers 1 of many

Changes: https://git.openjdk.org/babylon/pull/535/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=535&range=00
  Stats: 1149 lines in 40 files changed: 360 ins; 433 del; 356 mod
  Patch: https://git.openjdk.org/babylon/pull/535.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/535/head:pull/535

PR: https://git.openjdk.org/babylon/pull/535