fix(calendars): Remove obsolete calendars

data/calendars.json

@@ -1,15 +1,6 @@
 {
   "tree": {
-    "Rentrée": {
-      "Amphis de rentrée": {},
-      "Départements": {},
-      "Visites de bibliothèque": {},
-      "Masters": {},
-      "Étudiants internationaux": {},
-      "Conférences de recherche": {}
-    },
     "COF": {
-      "Rentrée du COF": {},
       "Évènements (COF)": {},
       "Assemblées Générales (COF)": {},
       "BdA": {
@@ -34,8 +25,7 @@
       "Club Inutile ☔": {}
     },
     "BDS": {
-      "Évènements (BDS)": {},
+      "Évènements (BDS)": {}
-      "Rentrée du BDS": {}
     },
     "Clubs BDS": {
       "Créneaux encadrés": {},
@@ -155,40 +145,6 @@
       "AYNpoC674yAjEmRy": {
         "name": "L'Hômonerie"
       },
-      "TcwNdrs6iyBRxFzk": {
-        "name": "Divers"
-      },
-      "G5ZRyTkMifXC2iHj": {
-        "name": "Amphis de rentrée",
-	"short_name": "Amphis"
-      },
-      "dJofECeczaGgNiKs": {
-        "name": "Rentrée du BDS",
-	"short_name": "BDS"
-      },
-      "7Rwd8JERwBsso7XG": {
-        "name": "Rentrée du COF",
-	"short_name": "COF"
-      },
-      "tiMsNcncqBxR4nL2": {
-        "name": "Départements",
-	"short_name": "Dpt"
-      },
-      "RpP773D6e2ReLfcY": {
-        "name": "Visites de bibliothèque",
-	"short_name": "Bibli"
-      },
-      "YRZ4A8imEEf8jnDE": {
-        "name": "Masters"
-      },
-      "8EDHX6kiPYcSrXXL": {
-        "name": "Étudiants internationaux",
-	"short_name": "Internationaux"
-      },
-      "TWgNxdri7zQSoiRf": {
-        "name": "Conférences de recherche",
-	"short_name": "Conf"
-      },
       "MJf2wnQafbLc2arS": {
         "name": "Arts pla'",
 	"color": "#ffb969"