BUG: Series.drop() with MultiIndex: inconsistent behaviour

[proost]

• closes Series.drop() with MultiIndex: inconsistent behaviour #8594
• tests added / passed
• passes black pandas
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

description:
In core.base

        indexer = self.get_indexer(labels)
        mask = indexer == -1
        if mask.any():
            if errors != "ignore":
                raise KeyError(f"{labels[mask]} not found in axis")

single index check and raise if there is no matching indexer. But 'MultiIndex' case,
In indexes.multi

        codes = com.index_labels_to_array(codes)
        i = self._get_level_number(level)
        index = self.levels[i]
        values = index.get_indexer(codes)

        mask = ~algos.isin(self.codes[i], values)

        return self[mask]

no check. So i add check logic and raise exception if there is no matching indexer.
This bug cause from 'MultiIndex', so do not distinguish between "Series" and "DataFrame"

[jreback]

looks good. ping on green.

[jreback]

also needs a rebase

[jreback]

thanks @proost