Remove unused get_vllm_instance_id (#65)

This function no longer exists upstream and we don't see to use
`VLLM_INSTANCE_ID` anywhere else in the code.

Author: tdoublep

vllm/executor/multiproc_spyre_executor.py

@@ -16,8 +16,7 @@
 from vllm.lora.request import LoRARequest
 from vllm.model_executor.layers.sampler import SamplerOutput
 from vllm.sequence import ExecuteModelRequest
-from vllm.utils import (get_distributed_init_method, get_open_port,
-                        get_vllm_instance_id)
+from vllm.utils import get_distributed_init_method, get_open_port
 
 logger = init_logger(__name__)
 
@@ -73,9 +72,6 @@ def _init_executor(self) -> None:
         world_size = self.parallel_config.world_size
         tensor_parallel_size = self.parallel_config.tensor_parallel_size
 
-        # Ensure that VLLM_INSTANCE_ID is set, to be inherited by workers
-        os.environ["VLLM_INSTANCE_ID"] = get_vllm_instance_id()
-
         # Disable torch async compiling which won't work with daemonic processes
         # [tom] it doesn't seme to work setting this from the code, we need to
         # set at command line. hopefully will be fixed by upgrading torch.