remove uwsig and move dotenv and cors to dev-dependencies

social_network/pyproject.toml

 [tool.poetry]
 name = "the-social-network"
-version = "0.0.5"
+version = "0.0.6"
 description = "Basic social network core."
 authors = ["Marc Feger <marc.feger@hhu.de>"]
 license = "BSD-4"
@@ -13,11 +13,10 @@ python = "^3.9"
 Django = "^3.2.9"
 djangorestframework = "^3.12.4"
 Pillow = "^8.4.0"
-django-cors-headers = "^3.10.0"
-django-dotenv = "^1.4.2"
-uWSGI = "^2.0.20"
 
 [tool.poetry.dev-dependencies]
+django-cors-headers = "^3.10.0"
+django-dotenv = "^1.4.2"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]