Remove tour extension

Author: martinRenou

docs/jupyterlite_config.json

@@ -12,7 +12,6 @@
         "https://github.com/conda-forge/releases/releases/download/noarch/jupyterlab-fasta-3.2.0-pyhd8ed1ab_0.tar.bz2/jupyterlab-fasta-3.2.0-pyhd8ed1ab_0.tar.bz2",
         "https://github.com/conda-forge/releases/releases/download/noarch/jupyterlab-geojson-3.2.0-pyhd8ed1ab_0.tar.bz2/jupyterlab-geojson-3.2.0-pyhd8ed1ab_0.tar.bz2",
         "https://github.com/conda-forge/releases/releases/download/noarch/jupyterlab-kernelspy-3.0.6-pyhd8ed1ab_0.tar.bz2/jupyterlab-kernelspy-3.0.6-pyhd8ed1ab_0.tar.bz2",
-        "https://github.com/conda-forge/releases/releases/download/noarch/jupyterlab-tour-3.1.4-pyhd8ed1ab_0.tar.bz2/jupyterlab-tour-3.1.4-pyhd8ed1ab_0.tar.bz2",
         "https://github.com/conda-forge/releases/releases/download/noarch/jupyterlab_miami_nights-0.3.2-pyhd8ed1ab_0.tar.bz2/jupyterlab_miami_nights-0.3.2-pyhd8ed1ab_0.tar.bz2",
         "https://github.com/conda-forge/releases/releases/download/noarch/jupyterlab_widgets-1.0.2-pyhd8ed1ab_0.tar.bz2/jupyterlab_widgets-1.0.2-pyhd8ed1ab_0.tar.bz2",
         "https://github.com/conda-forge/releases/releases/download/noarch/plotly-5.6.0-pyhd8ed1ab_0.tar.bz2/plotly-5.6.0-pyhd8ed1ab_0.tar.bz2",