Remove entity description mixin in Airzone (home-assistant#112378)

homeassistant/components/airzone/select.py

@@ -26,19 +26,14 @@
 from .entity import AirzoneEntity, AirzoneZoneEntity
 
 
-@dataclass(frozen=True)
-class AirzoneSelectDescriptionMixin:
-    """Define an entity description mixin for select entities."""
+@dataclass(frozen=True, kw_only=True)
+class AirzoneSelectDescription(SelectEntityDescription):
+    """Class to describe an Airzone select entity."""
 
     api_param: str
     options_dict: dict[str, int]
 
 
-@dataclass(frozen=True)
-class AirzoneSelectDescription(SelectEntityDescription, AirzoneSelectDescriptionMixin):
-    """Class to describe an Airzone select entity."""
-
-
 GRILLE_ANGLE_DICT: Final[dict[str, int]] = {
     "90deg": GrilleAngle.DEG_90,
     "50deg": GrilleAngle.DEG_50,