move doc dependencies to pyproject

docs/requirements.txt

@@ -1,20 +0,0 @@
-# Docs Specific Packages
-sphinx>=4.4.0,<5.0.0
-sphinx_rtd_theme>=1.0.0,<2.0.0
-recommonmark==0.7.1
-Jinja2<3.1
-docutils==0.16
-sphinxcontrib-django2
-sphinx-copybutton
-
-# Autodoc dependencies
-celery>=5.2.0,<6.0.0
-celery_once>=3.0.1
-django>=4.0.6,<4.1.0
-django-bootstrap-form
-django-celery-beat>=2.3.0
-django-esi>=4.0.1
-django-redis>=5.2.0,<6.0.0
-django-sortedm2m
-passlib
-redis>=4.0.0,<5.0.0