Remove warning flag for now

Author: jorgensd

.github/workflows/build_docs.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: Run the lecture notes and build webpage
         run:
-          pixi run jupyter-book build . -W
+          pixi run jupyter-book build .
 
       - uses: actions/upload-artifact@v4
         # always upload artifact, which can include error messages