help/config: remove outdated false claim about pywin32
Since version 1.8 (released on 2011-03-01), Mercurial doesn't use pywin32 any
more. The old fallback mechanism to use C:\Mercurial\Mercurial.ini if pywin32 is
not installed was removed in 244772f67ac1.
$ hg init
$ touch unknown
$ touch a
$ hg add a
$ hg ci -m "1"
$ touch b
$ hg add b
$ hg ci -m "2"
Should show unknown
$ hg status
? unknown
$ hg revert -r 0 --all
removing b
Should show unknown and b removed
$ hg status
R b
? unknown
Should show a and unknown
$ ls
a
unknown