Remove stray errors from valid tests.

[rasmi]

These valid cases carried errors arrays that never fired: named's checkRequire early-returns unless commonjs: true (54d86c8), and no-dynamic-require only flags import() with esmodule: true (7163824), which these cases don't set. Pre-v10 RuleTester silently ignored errors/output on valid cases; ESLint v10's RuleTester rejects them, which is what surfaced these in #3230. Correctly-configured versions already exist.

Extracted from #3230 to keep that PR clean. (see context here and here and here).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.50%. Comparing base (00fa198) to head (1ab0c39).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3251      +/-   ##
==========================================
- Coverage   95.64%   95.50%   -0.14%     
==========================================
  Files          83       83              
  Lines        3693     3692       -1     
  Branches     1336     1335       -1     
==========================================
- Hits         3532     3526       -6     
- Misses        161      166       +5     

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