deleteLabel method
Deletes a label.
API docs: https://developer.github.com/v3/issues/labels/#delete-a-label
Implementation
Future<bool> deleteLabel(RepositorySlug slug, String name) async {
final response = await github.request(
'DELETE',
'/repos/${slug.fullName}/labels/$name',
);
return response.statusCode == StatusCodes.NO_CONTENT;
}