[Bugfix] Remove deprecated @abstractproperty (#5174)

vllm/core/evictor_v1.py

 import enum
-from abc import ABC, abstractmethod, abstractproperty
+from abc import ABC, abstractmethod
 from typing import OrderedDict
 
 from vllm.block import PhysicalTokenBlock
@@ -44,7 +44,8 @@ class Evictor(ABC):
         """
         pass
 
-    @abstractproperty
+    @property
+    @abstractmethod
     def num_blocks(self) -> int:
         pass
 

vllm/core/evictor_v2.py

 import enum
-from abc import ABC, abstractmethod, abstractproperty
+from abc import ABC, abstractmethod
 from typing import OrderedDict, Tuple
 
 
@@ -46,7 +46,8 @@ class Evictor(ABC):
         """Remove a given block id from the cache."""
         pass
 
-    @abstractproperty
+    @property
+    @abstractmethod
     def num_blocks(self) -> int:
         pass
 

vllm/lora/worker_manager.py

-from abc import ABC, abstractmethod, abstractproperty
+from abc import ABC, abstractmethod
 from contextlib import contextmanager
 from typing import Any, Dict, List, Literal, Optional, Set, Type, Union
 
@@ -42,7 +42,8 @@ class AbstractWorkerLoRAManager(ABC):
         yield
         self._cached_dummy_lora = False
 
-    @abstractproperty
+    @property
+    @abstractmethod
     def is_enabled(self) -> bool:
         ...