code: public void deletePushRules(Object projectIdOrPath) throws GitLabApiException {
          delete(Response.Status.OK, null, "projects", getProjectIdOrPath(projectIdOrPath), "push_rule");
      }
docs: Removes a push rule from a project. This is an idempotent method and can be
  called multiple times. Either the push rule is available or not.
  
  <pre><code>DELETE /projects/:id/push_rule</code></pre>
  
  @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance, required
  @throws GitLabApiException if any exception occurs