Remove deprecated behaviors

[twoertwein]

No description provided.

[Dr-Irv]

I'm fine with the changes, but just merged in changes on read_csv() that is now in a different file, so you'll have to move those changes to that file (readers.pyi)

[twoertwein]

I'm fine with the changes, but just merged in changes on read_csv() that is now in a different file, so you'll have to move those changes to that file (readers.pyi)

I believe I rebased (and forced pushed) while you were reviewing this PR - should already be compatible with main.

[Dr-Irv]

thanks @twoertwein

I'll merge this, but your first commit had changes for read_csv(), and the final version does not, so you may want to look at that

[twoertwein]

thanks @twoertwein

I'll merge this, but your first commit had changes for read_csv(), and the final version does not, so you may want to look at that

@bashtage already removed prefix and squeeze in his PR so all those changes disappeared after rebasing.