code: public void removeMember(Object groupIdOrPath, Integer userId) throws GitLabApiException {
          Response.Status expectedStatus = (isApiVersion(ApiVersion.V3) ? Response.Status.OK : Response.Status.NO_CONTENT);
          delete(expectedStatus, null, "groups", getGroupIdOrPath(groupIdOrPath), "members", userId);
      }
docs: Removes member from the group.
  
  <pre><code>GitLab Endpoint: DELETE /groups/:id/members/:user_id</code></pre>
  
  @param groupIdOrPath the group ID, path of the group, or a Group instance holding the group ID or path, required
  @param userId the user ID of the member to remove
  @throws GitLabApiException if any exception occurs