This function permanently deletes a variable from a dataset. For a non-destructive
alternative see hide().
deleteVariables(dataset, variables)deleteVariable(dataset, variables)
the Dataset to modify
aliases (following crunch.namekey.dataset) or indices
of variables to delete.
(invisibly) dataset with the specified variables deleted
In an interactive session, you will be prompted to confirm that you
wish to delete the variable. To avoid that prompt, or to delete variables from a
non-interactive session, wrap the call in with_consent() to give
your permission to delete.