There's no single Git command that will delete a remote and local Git branch. But these two commands will get the job done. Need to delete remote and local Git branches? Here's how to do it.

To remove a remote Git branch in a repository such as GitHub or GitLab, the git push origin command is used with the --delete switch and a reference to the branch to delete.

The second link above will fix that problem. Once the local repo is initialized and a remote is configured, you should be able to run git status, git diff, etc.