Is it convenient to include in your CV papers that have not been cited at all along several years?
Convenient? No. Appropriate? Yes.
Unless you are at a point in your career where you can release an impressive "selected publications" CV, your CV is expected to contain everything that you have ever published. That includes publications that nobody has cited and even ones that you are embarrassed by in retrospect. I've certainly got some of those in my CV (we were all grad students once), and I simply trust that they will be drowned out by all of the good work that has been done since.