Function remove_issue_label 

pub async fn remove_issue_label(
    client: &Octocrab,
    owner: &str,
    repo: &str,
    number: u64,
    label: &str,
) -> Result<()>

Removes a label from a GitHub issue.

Errors

Returns an error if the API request fails. 404 errors (label not found) are treated as success (idempotent).