fix: remove unused CentralBluetoothManager in models (#138)

src/habluetooth/models.py

@@ -14,7 +14,6 @@
 
 if TYPE_CHECKING:
     from .base_scanner import BaseHaScanner
-    from .manager import BluetoothManager
 
 _BluetoothServiceInfoSelfT = TypeVar(
     "_BluetoothServiceInfoSelfT", bound="BluetoothServiceInfo"
@@ -30,24 +29,6 @@
 _int = int  # avoid cython conversion since we always want a pyint
 
 
-class CentralBluetoothManager:
-    """Central Bluetooth Manager."""
-
-    manager: BluetoothManager | None = None
-
-
-def get_manager() -> BluetoothManager:
-    """Get the BluetoothManager."""
-    if TYPE_CHECKING:
-        assert CentralBluetoothManager.manager is not None
-    return CentralBluetoothManager.manager
-
-
-def set_manager(manager: BluetoothManager) -> None:
-    """Set the BluetoothManager."""
-    CentralBluetoothManager.manager = manager
-
-
 @dataclass(slots=True, frozen=True)
 class HaBluetoothSlotAllocations:
     """Data for how to allocate slots for BLEDevice connections."""