Clean the requirements

[BDonnot]

Currently when you install it from a fresh python install you got:

Successfully installed Chronix2Grid-1.2.1 MarkupSafe-2.1.5 PyUtilib-6.0.0 Pyomo-6.6.1 anyio-4.3.0 argon2-cffi-23.1.0 argon2-cffi-bindings-21.2.0 arrow-1.3.0 asttokens-2.4.1 async-lru-2.0.4 attrs-23.2.0 babel-2.14.0 beautifulsoup4-4.12.3 bleach-6.1.0 blosc2-2.6.2 bottleneck-1.3.8 branca-0.7.1 cffi-1.16.0 cftime-1.6.3 clarabel-0.7.1 click-8.1.7 click-plugins-1.1.1 cligj-0.7.2 cloudpickle-3.0.0 colorlover-0.3.0 comm-0.2.2 contourpy-1.2.1 cufflinks-0.17.3 cvxpy-1.4.2 cycler-0.12.1 dask-2024.4.1 debugpy-1.8.1 decorator-5.1.1 defusedxml-0.7.1 deprecation-2.1.0 ecos-2.0.13 executing-2.0.1 fastjsonschema-2.19.1 fiona-1.9.6 folium-0.16.0 fonttools-4.51.0 fqdn-1.5.1 fsspec-2024.3.1 geopandas-0.14.3 h11-0.14.0 httpcore-1.0.5 httpx-0.27.0 importlib-metadata-7.1.0 ipykernel-6.29.4 ipython-8.23.0 ipython-genutils-0.2.0 ipywidgets-8.1.2 isoduration-20.11.0 jedi-0.19.1 jinja2-3.1.3 joblib-1.3.2 json5-0.9.24 jsonpointer-2.4 jsonschema-4.21.1 jsonschema-specifications-2023.12.1 jupyter-1.0.0 jupyter-client-8.6.1 jupyter-console-6.6.3 jupyter-core-5.7.2 jupyter-events-0.10.0 jupyter-lsp-2.2.4 jupyter-server-2.13.0 jupyter-server-terminals-0.5.3 jupyterlab-4.1.5 jupyterlab-pygments-0.3.0 jupyterlab-server-2.25.4 jupyterlab-widgets-3.0.10 kiwisolver-1.4.5 linopy-0.3.8 locket-1.0.0 matplotlib-3.8.4 matplotlib-inline-0.1.6 mistune-3.0.2 msgpack-1.0.8 nbclient-0.10.0 nbconvert-7.16.3 nbformat-5.10.4 ndindex-1.8 nest-asyncio-1.6.0 netcdf4-1.6.5 nose-1.3.7 notebook-7.1.2 notebook-shim-0.2.4 numexpr-2.10.0 osqp-0.6.5 overrides-7.7.0 pandocfilters-1.5.1 parso-0.8.4 partd-1.4.1 pexpect-4.9.0 pillow-10.3.0 platformdirs-4.2.0 plotly-5.20.0 ply-3.11 prometheus-client-0.20.0 prompt-toolkit-3.0.43 psutil-5.9.8 ptyprocess-0.7.0 pure-eval-0.2.2 py-cpuinfo-9.0.0 pycparser-2.22 pygments-2.17.2 pyparsing-3.1.2 pyproj-3.6.1 pypsa-0.27.1 pytest-tornasync-0.6.0.post2 python-json-logger-2.0.7 pyyaml-6.0.1 pyzmq-25.1.2 qdldl-0.1.7.post1 qtconsole-5.5.1 qtpy-2.4.1 referencing-0.34.0 rfc3339-validator-0.1.4 rfc3986-validator-0.1.1 rpds-py-0.18.0 scikit-learn-1.4.1.post1 scipy-1.11.4 scs-3.2.4.post1 seaborn-0.13.2 send2trash-1.8.3 shapely-2.0.3 sniffio-1.3.1 soupsieve-2.5 stack-data-0.6.3 tables-3.9.2 tenacity-8.2.3 terminado-0.18.1 threadpoolctl-3.4.0 tinycss2-1.2.1 toolz-0.12.1 tornado-6.4 traitlets-5.14.2 types-python-dateutil-2.9.0.20240316 uri-template-1.3.0 validators-0.28.0 wcwidth-0.2.13 webcolors-1.13 webencodings-0.5.1 websocket-client-1.7.0 widgetsnbextension-4.0.10 xarray-2024.3.0 xyzservices-2024.4.0 zipp-3.18.1

Which is... rather huge...