I've deleted my repository on GitHub and try to create one local.
When I do:
remote show origin
remote: Repository not found.
fatal: repository 'https://github.com/userName/repositoryName.git/' not found
If you have a new remote available you can update the URL used by the origin remote.
git remote set-url origin <your new remote URL or path>
If you do not have an associated remote you can simply remove the current origin remote.
git remote rm origin