remove unused optional_ga_schema

homeassistant/components/knx/storage/entity_store_schema.py

@@ -36,26 +36,6 @@
 )
 
 
-def optional_ga_schema(
-    key: str, ga_selector: GASelector
-) -> dict[vol.Marker, vol.Schema]:
-    """Validate group address schema or remove key if no address is set."""
-    # frontend will return {key: {"write": None, "state": None}} for unused GA sets
-    # -> remove this entirely for optional keys
-    # if one GA is set, validate as usual
-    return {
-        vol.Optional(key): ga_selector,
-        vol.Remove(key): vol.Schema(
-            {
-                vol.Optional("write"): None,
-                vol.Optional("state"): None,
-                vol.Optional("passive"): vol.IsFalse(),  # None or empty list
-            },
-            extra=vol.ALLOW_EXTRA,
-        ),
-    }
-
-
 SWITCH_SCHEMA = vol.Schema(
     {
         vol.Required("entity"): BASE_ENTITY_SCHEMA,