D644: rebase: remove complex unhiding code

[durham (Durham Goode)]

durham added a comment.


  This sound reasonable, assuming all descendant/children computations are done before prepared is set.  Could you run the fb-hgext inhibit/fbamend tests with this change?  Since they might do some more interesting acrobatics around visibility changes.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D644

To: quark, #hg-reviewers
Cc: durham, mercurial-devel