chore(calendars.json): Remove unused calendars

data/calendars.json

@@ -1,13 +1,5 @@
 {
   "tree": {
-    "Rentrée": {
-      "Amphis de rentrée": {},
-      "Départements": {},
-      "Visites de bibliothèque": {},
-      "Masters": {},
-      "Étudiants internationaux": {},
-      "Conférences de recherche": {}
-    },
     "COF": {
       "Rentrée du COF": {},
       "Évènements (COF)": {},
@@ -45,7 +37,6 @@
     "Délégation Générale": {},
     "K-Fêt": {},
     "Écocampus": {},
-    "La Psychédéliste":{},
     "Ambassadeur·rice·s santé": {}
   },
 
@@ -112,10 +103,6 @@
         "short_name": "Jeux",
         "color": "#5f9ae0"
       },
-      "22rQF3gjjz8LifZC": {
-        "name": "La Psychédéliste",
-        "short_name": "Psychédéliste"
-      },
       "AfHYkm3gqQ4fRRj5": {
         "name": "HackENS",
         "default_location": "Cave d'hackENS"
@@ -158,10 +145,6 @@
       "TcwNdrs6iyBRxFzk": {
         "name": "Divers"
       },
-      "G5ZRyTkMifXC2iHj": {
-        "name": "Amphis de rentrée",
-	"short_name": "Amphis"
-      },
       "dJofECeczaGgNiKs": {
         "name": "Rentrée du BDS",
 	      "short_name": "BDS"
@@ -170,25 +153,6 @@
         "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"