Drop  columns from the table.

        See the docs for ``numpy.lib.recfunctions.drop_fields`` for an
        explanation of the remaining options.

def drop_columns(self, colnames, **kwargs):
        """Drop  columns from the table.

        See the docs for ``numpy.lib.recfunctions.drop_fields`` for an
        explanation of the remaining options.
        """
        new_arr = rfn.drop_fields(
            self, colnames, usemask=False, asrecarray=True, **kwargs
        )
        return self.__class__(
            new_arr,
            h5loc=self.h5loc,
            split_h5=self.split_h5,
            name=self.name,
            h5singleton=self.h5singleton
        )