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

Yep, sure!

The problem is, it just builds fine locally ... Tested it both on linux and windows. 

I think it has to do with this example:

```
In [41]: a, b = 1, 2

In [42]: pd.eval('@a + b')
  File "<string>", line unknown
SyntaxError: The '@' prefix is not allowed in top-level eval calls, 
please refer to your variables by name without the '@' prefix
```

Because it is a syntax-error, which seems to have some different error traceback than other errors
