diff --git a/index.js b/index.js
index a2418f7..1d1e279 100644
--- a/index.js
+++ b/index.js
@@ -17,42 +17,6 @@
       "license": "CC BY-NC-ND 3.0",
       "dir": "hybrid-linux-en"
 },
-{
-      "title": "mpi",
-      "subtitle": "Basics",
-      "level": "Elementary",
-      "desc": "description",
-      "license": "CC BY-NC-ND 3.0",
-      "lang": "el",
-      "dir": "hybrid-mpi"
-},
-{
-      "title": "mpi",
-      "subtitle": "Basics",
-      "level": "Elementary",
-      "desc": "description",
-      "license": "CC BY-NC-ND 3.0",
-      "lang": "el",
-      "dir": "hybrid-mpi"
-},
-{
-      "title": "mpi",
-      "subtitle": "Basics",
-      "level": "Elementary",
-      "desc": "description",
-      "license": "CC BY-NC-ND 3.0",
-      "lang": "el",
-      "dir": "hybrid-mpi"
-},
-{
-      "title": "mpi",
-      "subtitle": "Basics",
-      "level": "Elementary",
-      "desc": "description",
-      "license": "CC BY-NC-ND 3.0",
-      "lang": "el",
-      "dir": "hybrid-mpi"
-},
 {
       "title": "mpi",
       "subtitle": "Basics",