CLN: remove empty parenteses on class creation

[topper-123]

Minor clean-up: Some classes are created with a () which is not needed.

[codecov]

Codecov Report

Merging #26323 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #26323      +/-   ##
==========================================
- Coverage   92.04%   92.03%   -0.01%     
==========================================
  Files         175      175              
  Lines       52291    52291              
==========================================
- Hits        48132    48128       -4     
- Misses       4159     4163       +4

Flag	Coverage Δ
#multiple	90.59% <ø> (ø)	⬆️
#single	40.74% <ø> (-0.15%)	⬇️

Impacted Files	Coverage Δ
pandas/util/_test_decorators.py	93.22% <ø> (ø)	⬆️
pandas/io/gbq.py	78.94% <0%> (-10.53%)	⬇️
pandas/core/frame.py	97.01% <0%> (-0.12%)	⬇️

---

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[codecov]

Codecov Report

Merging #26323 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #26323      +/-   ##
==========================================
- Coverage   92.04%   92.03%   -0.01%     
==========================================
  Files         175      175              
  Lines       52297    52297              
==========================================
- Hits        48138    48133       -5     
- Misses       4159     4164       +5

Flag	Coverage Δ
#multiple	90.59% <ø> (ø)	⬆️
#single	40.72% <ø> (-0.17%)	⬇️

Impacted Files	Coverage Δ
pandas/util/_test_decorators.py	93.22% <ø> (ø)	⬆️
pandas/io/gbq.py	78.94% <0%> (-10.53%)	⬇️
pandas/core/frame.py	97.01% <0%> (-0.12%)	⬇️
pandas/util/testing.py	90.6% <0%> (-0.11%)	⬇️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[jreback]

looks fine. can you add a rule which checks that we don't have this.

[topper-123]

I've added the rule. Could someone verify it works, I'm on Windows and can't run the script.

[jschendel]

Could someone verify it works, I'm on Windows and can't run the script.

I checked your original regex, and the one I suggested, and both look to work as intended.

FYI - installing git on windows often times will also give you git bash, which would allow you to test out these things (just replace invgrep with grep).

[gfyoung]

FYI: The changes that were introduced into code_checks.sh had some pretty blatant typos and grammar errors. I've corrected them in a separate commit.