docs: use pip install and do not mock imports

.readthedocs.yaml

@@ -10,11 +10,8 @@ build:
       python: "3.12"
    jobs:
       pre_build:
-         - 'sphinx-apidoc -o docs/source/reference -H "Code Reference" l2gv2'
+         - "pip install '.[docs]' --find-links https://data.pyg.org/whl/torch-2.4.1%2Bcpu.html"
+         - "sphinx-apidoc -o docs/source/reference -H 'Code Reference' l2gv2 '*/execute.py'" # ignores execute.py script
 
 sphinx:
    configuration: docs/source/conf.py
-
-python:
-   install:
-   - requirements: docs/requirements.txt

docs/source/conf.py

@@ -26,30 +26,6 @@
 templates_path = ["_templates"]
 exclude_patterns = []
 
-autodoc_mock_imports = [
-    "optuna",
-    "autograd",
-    "pymanopt",
-    "tqdm",
-    "torch",
-    "numba",
-    "numpy",
-    "pandas",
-    "sklearn",
-    "scipy",
-    "community",
-    "torch_geometric",
-    "torch_scatter",
-    "local2global",
-    "raphtory",
-    "local2global_embedding",
-    "networkx",
-    "matplotlib",
-    "nfts",
-    "polars",
-]
-
-
 # -- Options for HTML output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output