Revert "trigger CI on changes to sample data (#139)"

This reverts commit 90d8bf3.

Author: tomkralidis

.github/workflows/docker.yml

@@ -12,7 +12,6 @@ on:
       - master
     paths:
       # NB currently the Notebooks are not in Docker Image!
-      - workshop/jupyter/content/data
       - workshop/jupyter/Dockerfile
       - workshop/jupyter/entrypoint.sh
       - workshop/jupyter/requirements.txt
@@ -21,7 +20,6 @@ on:
   pull_request:
     paths:
       # NB currently the Notebooks are not in Docker Image!
-      - workshop/jupyter/content/data
       - workshop/jupyter/Dockerfile
       - workshop/jupyter/entrypoint.sh
       - workshop/jupyter/requirements.txt