Remove jupyterlab and notebook pins in scipy-notebook (#2060)

Author: mathbunnyru

images/scipy-notebook/Dockerfile

@@ -26,10 +26,6 @@ RUN apt-get update --yes && \
 
 USER ${NB_UID}
 
-# mamba downgrades these packages to previous major versions, which causes issues
-RUN echo 'jupyterlab >=4.0.4' >> "${CONDA_DIR}/conda-meta/pinned" && \
-    echo 'notebook >=7.0.2' >> "${CONDA_DIR}/conda-meta/pinned"
-
 # Install Python 3 packages
 RUN mamba install --yes \
     'altair' \