Fixed #4945 -- Removed unused `GET_ITERATOR_CHUNK_SIZE` definition from manager.py.  `GET_ITERATOR_CHUNK_SIZE` is already defined in query.py.  Thanks zigiDev@mac.com.
Fixed #4945 -- Removed unused `GET_ITERATOR_CHUNK_SIZE` definition from manager.py.  `GET_ITERATOR_CHUNK_SIZE` is already defined in query.py.  Thanks zigiDev@mac.com.


git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@5743 bcc190cf-cafb-0310-a4f2-bffc1f526a37

jamespacileo/django-france,alex/django-old,Instagram/django,t11e/django,alex/django-old,sam-tsai/django-old,dcramer/django-compositepks,mitsuhiko/django,sam-tsai/django-old,mitsuhiko/django,bfirsh/django-old,hugs/django,alex/django-old,mitsuhiko/django,disqus/django-old,jamespacileo/django-france,bfirsh/django-old,disqus/django-old,dcramer/django-compositepks,django-nonrel/django-nonrel,django-nonrel/django-nonrel,disqus/django-old,Instagram/django,hugs/django,sam-tsai/django-old,django-nonrel/django-nonrel,skevy/django,sam-tsai/django-old,jamespacileo/django-france,Smarsh/django,Smarsh/django,skevy/django,hugs/django,dcramer/django-compositepks,t11e/django,Smarsh/django,Smarsh/django,Instagram/django,bfirsh/django-old,t11e/django,skevy/django