Revert "PERF: faster corrwith method for pearson and spearman correlation when other is a Series and axis = 0 (column-wise) (#46174)" #49140
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DataFrame.corrwithis changed in pandas 1.5.0 ?? #48826 (Replace xxxx with the GitHub issue number)Seriesis changed? #49141doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.Reverting for now - I've a test fix and whatsnew note from #49032 , but have reverted the change and added the issue as a test so we can go ahead with 1.5.1. A fixed version of the performance improvement can go into 2.0.0