Update content.json

public/content/content.json

@@ -1055,28 +1055,5 @@
 
     },
     "refIndex": 13
-  },
-  {
-    "item": {
-      "title": "Repair CityGML Files",
-      "project": "CityDoctor2",
-      "author": {
-        "firstName": "Matthias",
-        "lastName": "Betz",
-        "hftURL": "https://www.hft-stuttgart.de/p/matthias-betz"
-      },
-      "project_year_start": "2019",
-      "project_year_end": "2021",
-      "project_is_on_going": true,
-      "imageLink": "imgs/thumbnails/CityDoctorScreen.png",
-      "keywords": ["CityDoctor", "CityGML", "Healing", "Service"],
-      "description_en": "A service for repairing CityGML files. No guarantee that all errors will be fixed.",
-      "description_de": "Ein Service für die Reparatur von CityGML Dateien. Keine Grantie, dass alle Fehler behoben werden.",
-      "internal": true
-    },
-    "links": {
-      "project": "https://193.196.137.147:50000/"
-    },
-    "refIndex": 15
   }
 ]