TST/CLN: reuse float_frame fixture in tests\io\formats\test_format.py

[simonjayhawkins]

follow-on from #26603

[codecov]

Codecov Report

Merging #26756 into master will increase coverage by 1.4%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #26756     +/-   ##
=========================================
+ Coverage    90.3%   91.71%   +1.4%     
=========================================
  Files         179      179             
  Lines       50747    50747             
=========================================
+ Hits        45826    46541    +715     
+ Misses       4921     4206    -715

Flag	Coverage Δ
#multiple	90.3% <ø> (ø)	⬆️
#single	41.21% <ø> (?)

Impacted Files	Coverage Δ
pandas/core/arrays/categorical.py	95.92% <0%> (+0.12%)	⬆️
pandas/core/indexes/datetimes.py	96.37% <0%> (+0.16%)	⬆️
pandas/util/testing.py	90.94% <0%> (+0.31%)	⬆️
pandas/io/formats/printing.py	85.56% <0%> (+1.06%)	⬆️
pandas/io/clipboard/clipboards.py	34.78% <0%> (+2.89%)	⬆️
pandas/core/computation/expr.py	97.52% <0%> (+3.02%)	⬆️
pandas/core/computation/common.py	89.47% <0%> (+5.26%)	⬆️
pandas/io/pytables.py	90.29% <0%> (+26.47%)	⬆️
pandas/core/computation/pytables.py	90.24% <0%> (+27.74%)	⬆️

---

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 a387110...93566ee. Read the comment docs.

[jreback]

thanks @simonjayhawkins