Minor issue on page 432

[baifanhorst]

In the codes on page 432, ''import sklearn.model_selection'' is not needed since the function is called in the next line by ''sklearn.model_selection'', not ''model_selection''.

[rasbt]

I agree, this is redundant. Thanks for the note, I just added it to the errata page here: https://github.com/rasbt/machine-learning-book/tree/main/ERRATA#chapter-13