PDEP-8: Inplace methods in pandas (#51466)

Co-authored-by: Joris Van den Bossche <1020496+jorisvandenbossche@users.noreply.github.com> Co-authored-by: Patrick Hoefler <61934744+phofl@users.noreply.github.com> Co-authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com> Co-authored-by: Irv Lustig <irv@princeton.com> Co-authored-by: Richard Shadrach <rhshadrach@gmail.com>

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