simplify language mapping to always use english card type tags - we never show them in the generated pdf anyway

card_db/en_us/mapping.json

@@ -1,17 +1,2 @@
 {
-    "Action": "Action",
-    "Victory": "Victory",
-    "Attack": "Attack",
-    "Treasure": "Treasure",
-    "Reaction": "Reaction",
-    "Duration": "Duration",
-    "Prize": "Prize",
-    "Shelter": "Shelter",
-    "Ruins": "Ruins",
-    "Looter": "Looter",
-    "Curse": "Curse",
-    "Blank": "Blank",
-    "Reserve": "Reserve",
-    "Traveller": "Traveller",
-    "Event": "Event"
 }