Move term "water closet" to terms for amenity=toilets (#1854)

Author: matkoniecz

data/presets/amenity/toilets.json

@@ -32,6 +32,7 @@
         "privy",
         "public restroom",
         "public toilet",
+        "water closet",
         "w.c.",
         "wc"
     ],
@@ -42,7 +43,6 @@
     "aliases": [
         "Toilets",
         "Bathroom",
-        "Lavatory",
-        "Water Closet"
+        "Lavatory"
     ]
 }