CLN: remove obsolete scripts

[jreback]

closes #13704

[jreback]

cc @wesm @jorisvandenbossche @TomAugspurger

speak now or forever hold your peace

[jorisvandenbossche]

speak now or forever hold your peace

speak now or look in the git history :-)

Therefore, big +1

[jorisvandenbossche]

Out of curiosity, does somebody use find_commits_touching_func.py ?

[codecov]

Codecov Report

Merging #18181 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #18181      +/-   ##
==========================================
- Coverage   91.42%    91.4%   -0.02%     
==========================================
  Files         163      163              
  Lines       50068    50068              
==========================================
- Hits        45776    45766      -10     
- Misses       4292     4302      +10

Flag	Coverage Δ
#multiple	89.21% <ø> (-0.01%)	⬇️
#single	40.36% <ø> (-0.06%)	⬇️

Impacted Files	Coverage Δ
pandas/io/gbq.py	25% <0%> (-58.34%)	⬇️
pandas/core/frame.py	97.8% <0%> (-0.1%)	⬇️
pandas/core/indexes/datetimes.py	95.38% <0%> (-0.1%)	⬇️

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