Rename op2 to op

[littledivy]

It has stayed op2 for a long time now with older op macro removed

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 70.90164% with 71 lines in your changes missing coverage. Please review.

Project coverage is 81.75%. Comparing base (0c7f83e) to head (732d2e4). Report is 50 commits behind head on main.

Files	Patch %	Lines
core/runtime/ops.rs	76.40%	21 Missing :warning:
core/ops_builtin_v8.rs	56.09%	18 Missing :warning:
core/ops_builtin.rs	37.03%	17 Missing :warning:
testing/checkin/runner/ops.rs	20.00%	8 Missing :warning:
ops/op/mod.rs	78.57%	3 Missing :warning:
testing/checkin/runner/ops_error.rs	66.66%	2 Missing :warning:
core/extensions.rs	0.00%	1 Missing :warning:
ops/lib.rs	80.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #808      +/-   ##
==========================================
+ Coverage   81.43%   81.75%   +0.32%     
==========================================
  Files          97       98       +1     
  Lines       23877    24324     +447     
==========================================
+ Hits        19445    19887     +442     
- Misses       4432     4437       +5     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[littledivy]

https://github.com/denoland/deno_core/pull/967