DEPR: more deprecation warnings

[jreback]

No description provided.

[codecov]

Codecov Report

Merging #16001 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #16001      +/-   ##
==========================================
- Coverage   91.02%   91.02%   -0.01%     
==========================================
  Files         145      145              
  Lines       50391    50391              
==========================================
- Hits        45870    45866       -4     
- Misses       4521     4525       +4

Flag	Coverage Δ
#multiple	88.82% <ø> (-0.01%)	⬇️
#single	40.33% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
pandas/core/common.py	90.68% <0%> (-0.35%)	⬇️
pandas/util/testing.py	80.83% <0%> (-0.19%)	⬇️
pandas/tseries/index.py	95.33% <0%> (-0.1%)	⬇️

---

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 614a48e...8850328. Read the comment docs.