fix merge issue (#12420)

Author: DuYicong515

pytorch_lightning/trainer/connectors/accelerator_connector.py

@@ -798,19 +798,6 @@ def tpu_cores(self) -> Optional[Union[List[int], int]]:
             return self._tpu_cores  # type: ignore
         return 0
 
-    @property
-    def tpu_id(self) -> Optional[int]:
-        if isinstance(self.accelerator, TPUAccelerator):
-            if isinstance(self._tpu_cores, list):
-                return self._tpu_cores[0]
-        return None
-
-    @property
-    def num_ipus(self) -> int:
-        if isinstance(self.accelerator, IPUAccelerator):
-            return self.devices
-        return 0
-
     @property
     def gpus(self) -> Optional[Union[List[int], str, int]]:
         return self._gpus