Remove the instuctor's presentation mode

Reason: RISE only works in the older Jupyter Notebook app
and not in the more commonly used JupyterLab app

README.md

@@ -139,7 +139,7 @@ Then, unpack the ZIP file into a folder of your choice,
 <img src="static/repo_download.png" width="50%">
 
 
-### Alternative Installation (for Instructors)
+### Alternative Installation (for Instructors using Linux)
 
 Python can also be installed in a "pure" way
     obtained directly from its core development team [here](https://www.python.org/downloads/).
@@ -232,31 +232,6 @@ The command-line interface stays open in the background,
 <img src="static/cli_jupyter_lab.png" width="50%" align="center">
 
 
-#### Interactive Presentation Mode & Live Coding
-
-`poetry install` also installs the
-    [RISE <img height="12" style="display: inline-block" src="static/link/to_gh.png">](https://github.com/damianavila/RISE)
-    extension for Jupyter.
-With that, the instructor can execute code in *presentation* mode during a class session.
-However, the RISE extension does *not* work in the more recent
-    [JupyterLab](https://jupyterlab.readthedocs.io/en/stable/) app
-    but only in the older [Jupyter Notebook](https://jupyter-notebook.readthedocs.io/en/stable/) app,
-    which comes with less features
-        and a simpler [GUI <img height="12" style="display: inline-block" src="static/link/to_gh.png">](https://en.wikipedia.org/wiki/Graphical_user_interface).
-The instructor can start the latter with:
-
-- `poetry run jupyter notebook`
-
-This also opens a new tab in the web browser.
-After opening a notebook,
-    clicking on the button highlighted below
-    starts the presentation mode.
-
-<img src="static/presentation_mode.png" width="50%" align="center">
-
-Not all notebooks are designed for this presentation mode.
-
-
 ## Contributing
 
 Feedback **is highly encouraged** and will be incorporated.

noxfile.py

@@ -46,11 +46,6 @@ def init_project(session):
     ):
         session.run("poetry", "run", "pre-commit", "install", f"--hook-type={type_}")
 
-    # Copy the extensions' JavaScript and CSS files into Jupyter's search directory.
-    session.run(
-        "poetry", "run", "jupyter", "contrib", "nbextension", "install", "--user"
-    )
-
 
 @nox.session(venv_backend="none")
 def doctests(session):