de wall charger: remove 3-phase 22kW from model name

Per #3152, the 1-phase 11kW model has the same product id and same dps
as the 3-phase 22kW model from #3120

custom_components/tuya_local/devices/dewall_evcharger.yaml

@@ -2,7 +2,7 @@ name: EV charger
 products:
   - id: witok7vhhjohtr02
     manufacturer: dé
-    model: Wall charger 3-phase 22kW
+    model: Wall charger
 entities:
   - entity: sensor
     translation_key: status