Revert "Merge pull request #10727 from jorisvandenbossche/sphinx-traceback
This reverts commit d40627398cf78347f5a49fa060bad1c40514908a, reversing
changes made to bd804aa75ac9b7a55c00101dbea01571cbdfd068.

@jorisvandenbossche reverting so that the docs build

pls rebsumit when you can
