hide strings of dummy presets for secondary uses of the "emergency" tag

The [`emergency` tag](https://wiki.openstreetmap.org/wiki/Key:emergency) is used both as a primary tag (e.g. `emergency=ambulance_station`) as well as a key of the [access](https://wiki.openstreetmap.org/wiki/Key:access) tagging schema. The "primary" emergency features only ever come as points or areas, while the "access" emergency tags are typically found on linear features.

In order to avoid false-positives in the geometry check validation of iD, the id-tagging-schema has a couple of dummy presets that allow the use of the tag on lines (see 423329c1eb).

This removes the unnecessary translatable strings caused by this workaround, which cause confusion for translators on transifex.

data/presets/emergency/_designated.json

@@ -8,7 +8,7 @@
     "tags": {
         "emergency": "designated"
     },
-    "name": "Emergency Access Designated",
+    "name": "{emergency}",
     "searchable": false,
     "matchScore": 0.01
 }

data/presets/emergency/_destination.json

@@ -8,7 +8,7 @@
     "tags": {
         "emergency": "destination"
     },
-    "name": "Emergency Access Destination",
+    "name": "{emergency}",
     "searchable": false,
     "matchScore": 0.01
 }

data/presets/emergency/_no.json

@@ -8,7 +8,7 @@
     "tags": {
         "emergency": "no"
     },
-    "name": "Emergency Access No",
+    "name": "{emergency}",
     "searchable": false,
     "matchScore": 0.01
 }

data/presets/emergency/_official.json

@@ -8,7 +8,7 @@
     "tags": {
         "emergency": "official"
     },
-    "name": "Emergency Access Official",
+    "name": "{emergency}",
     "searchable": false,
     "matchScore": 0.01
 }

data/presets/emergency/_private.json

@@ -8,7 +8,7 @@
     "tags": {
         "emergency": "private"
     },
-    "name": "Emergency Access Private",
+    "name": "{emergency}",
     "searchable": false,
     "matchScore": 0.01
 }

data/presets/emergency/_yes.json

@@ -8,7 +8,7 @@
     "tags": {
         "emergency": "yes"
     },
-    "name": "Emergency Access Yes",
+    "name": "{emergency}",
     "searchable": false,
     "matchScore": 0.01
 }