Re-remove old ref.

Author: vladd-bit

Dockerfile_singleuser

@@ -212,8 +212,6 @@ RUN uv pip install --upgrade --system pip setuptools wheel
 
 # install the rest of the packages including medcat
 COPY ./requirements.txt /srv/jupyterhub/
-# install requirements for working with cogstack scripts
-COPY notebooks/demo_working_with_cogstack/requirements.txt /srv/jupyterhub/working_with_cogstack_requirements.txt
 
 RUN if [ "$GPU_BUILD" = "true" ] && [ "$CPU_ARCHITECTURE" = "amd64" ]; then \
       uv pip install --system --no-cache-dir -r /srv/jupyterhub/requirements.txt \