[code-reflection] RFR: Simplify OpFactory

Fri Jun 27 20:06:44 UTC 2025

Remove functionality from `OpFactory` to compute an op factory from annotated op classes. Functionality is cloned in example Triton and ONNX code as an `OpFacotyrHelper` class.

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Commit messages:
 - Simplify OpFactory

Changes: https://git.openjdk.org/babylon/pull/470/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=470&range=00
  Stats: 406 lines in 7 files changed: 273 ins; 127 del; 6 mod
  Patch: https://git.openjdk.org/babylon/pull/470.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/470/head:pull/470

PR: https://git.openjdk.org/babylon/pull/470