rtd - add poetry to conf

.readthedocs.yaml

@@ -10,7 +10,4 @@ build:
             # Install poetry
             # https://python-poetry.org/docs/#installing-manually
             - python -m pip install poetry
-        post_install:
-            # Install dependencies with 'docs' dependency group
-            # https://python-poetry.org/docs/managing-dependencies/#dependency-groups
-            - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install --with docs
+            - poetry install