TST: move test_non_reducing_slice_on_multiindex

[simonjayhawkins]

Follow-up to #19881

[codecov]

Codecov Report

Merging #24545 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #24545      +/-   ##
==========================================
+ Coverage   92.32%   92.33%   +<.01%     
==========================================
  Files         166      166              
  Lines       52454    52454              
==========================================
+ Hits        48430    48431       +1     
+ Misses       4024     4023       -1

Flag	Coverage Δ
#multiple	90.75% <ø> (ø)	⬆️
#single	43.01% <ø> (-0.01%)	⬇️

Impacted Files	Coverage Δ
pandas/util/testing.py	87.68% <0%> (+0.09%)	⬆️

---

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[codecov]

Codecov Report

Merging #24545 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #24545      +/-   ##
==========================================
+ Coverage   92.32%   92.33%   +<.01%     
==========================================
  Files         166      166              
  Lines       52454    52454              
==========================================
+ Hits        48430    48431       +1     
+ Misses       4024     4023       -1

Flag	Coverage Δ
#multiple	90.75% <ø> (ø)	⬆️
#single	43.01% <ø> (-0.01%)	⬇️

Impacted Files	Coverage Δ
pandas/util/testing.py	87.68% <0%> (+0.09%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e76c90e...a623921. Read the comment docs.

[jreback]

thanks