Revert "DEPR: is_copy arg of take (#30615)"
This reverts commit 7796be6e2c548de0be16e6adf08f5fca2ab9b4bc.

See https://github.com/pandas-dev/pandas/issues/27357#issuecomment-571639242 and https://github.com/pandas-dev/pandas/pull/30615#issuecomment-571637550