Remove unnecessary imports from tests/__init__.py
Remove unnecessary imports from tests/__init__.py

michalwerner/django-filebrowser-tinymce4,michalwerner/django-filebrowser-tinymce4,michalwerner/django-filebrowser,michalwerner/django-filebrowser-tinymce4,michalwerner/django-filebrowser,michalwerner/django-filebrowser,djkartsa/django-filebrowser-no-grappelli,djkartsa/django-filebrowser-no-grappelli,djkartsa/django-filebrowser-no-grappelli