Removing trunk tests from tox.ini.
Removing trunk tests from tox.ini.

gregmuellegger/django-sortedm2m,gradel/django-sortedm2m,gradel/django-sortedm2m,fabrique/django-sortedm2m,MathieuDuponchelle/django-sortedm2m,fabrique/django-sortedm2m,gregmuellegger/django-sortedm2m,fabrique/django-sortedm2m,gradel/django-sortedm2m,MathieuDuponchelle/django-sortedm2m,gregmuellegger/django-sortedm2m