code: public void removeRunner(Integer runnerId) throws GitLabApiException {
  
          if (runnerId == null) {
              throw new RuntimeException("runnerId cannot be null");
          }
  
          delete(Response.Status.NO_CONTENT, null, "runners", runnerId);
      }
docs: Remove a runner.
  
  <pre><code>GitLab Endpoint: DELETE /runners/:id</code></pre>
  
  @param runnerId The ID of a runner
  @throws GitLabApiException if any exception occurs