feat: remove unused arg from OPCM upgrade tests

[maurelian]

Description

Removes an argument which was added unnecessarily in #13814.

[ControlCplusControlV]

- sidenote do we not have CI to detect things like this?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.09%. Comparing base (66fea80) to head (9d2509f).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #14113      +/-   ##
===========================================
- Coverage    46.42%   45.09%   -1.33%     
===========================================
  Files          994      937      -57     
  Lines        84020    79352    -4668     
===========================================
- Hits         39008    35787    -3221     
+ Misses       42062    40796    -1266     
+ Partials      2950     2769     -181     

Flag	Coverage Δ
cannon-go-tests-32	?
cannon-go-tests-64	?
contracts-bedrock-tests	94.44% <ø> (ø)

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see 65 files with indirect coverage changes

[maurelian]

@ControlCplusControlV

- sidenote do we not have CI to detect things like this?

it's a bit of a tricky case to detect, because the arg wasn't entirely unused, it just didn't matter what it was set to.

open to a suggested semgrep rule