Remove a couple mentions of manipulators (which are no longer relevant) from docs/model-api.txt
Remove a couple mentions of manipulators (which are no longer relevant) from docs/model-api.txt


git-svn-id: http://code.djangoproject.com/svn/django/trunk@8122 bcc190cf-cafb-0310-a4f2-bffc1f526a37

--HG--
extra : convert_revision : cfedaf2403e75a80ae41224637c9f30d69d02f9c

adieu/django-nonrel,heracek/django-nonrel,heracek/django-nonrel,adieu/django-nonrel,adieu/django-nonrel,heracek/django-nonrel