Chore: cleanup no longer used imports and parameters

assets/layers/atm/atm.json

@@ -154,10 +154,6 @@
       },
       "freeform": {
         "key": "brand",
-        "type": "nsi",
-        "helperArgs": [
-          "amenity=atm"
-        ],
         "placeholder": {
           "en": "Brand name",
           "de": "Markenname",
@@ -674,4 +670,4 @@
     "enableImproveAccuracy": true,
     "enableRelocation": false
   }
-}
+}

assets/layers/parcel_lockers/parcel_lockers.json

@@ -110,10 +110,6 @@
       },
       "freeform": {
         "key": "brand",
-        "type": "nsi",
-        "helperArgs": [
-          "amenity=parcel_locker"
-        ],
         "placeholder": {
           "en": "Brand",
           "de": "Marke",
@@ -308,4 +304,4 @@
   "allowMove": {
     "enableImproveAccuracy": true
   }
-}
+}

assets/layers/postoffices/postoffices.json

@@ -218,17 +218,13 @@
         "ca": "Aquesta és una oficina postal de {brand}"
       },
       "freeform": {
-        "type": "nsi",
         "key": "brand",
         "placeholder": {
           "en": "Brand of the post office",
           "de": "Marke der Poststelle",
           "es": "Marca de la oficina de correos",
           "ca": "Marca de l'oficina postal"
-        },
-        "helperArgs": [
-          "amenity=post_office"
-        ]
+        }
       }
     },
     {