git commit -a -m "add ignore"
git push origin master
You need to remove the folder now that it is in the .gitignore. You can do this by deleting the folder locally, adding changes, commit it and then push it. If you need the folder in your local repository you can then recover it by making a backup, before deleting it.
If you however do not want to remove the folder locally, and delete it just from the remote, you can do:
git rm -r --cached Results/.ipynb_checkpoints/ git commit -m "Removed folder from repository" git push origin master
More about deleting a file/folder from the remote repository but not locally can be read in this question and answers.