Remove incorrect env value

Author: gshtras

docker/Dockerfile.rocm

@@ -114,12 +114,6 @@ ENV TOKENIZERS_PARALLELISM=false
 # ENV that can improve safe tensor loading, and end-to-end time
 ENV SAFETENSORS_FAST_GPU=1
 
-# User-friendly environment setting for multi-processing to avoid below RuntimeError.
-# RuntimeError: Cannot re-initialize CUDA in forked subprocess. To use CUDA with multiprocessing,
-# you must use the 'spawn' start method 
-# See https://pytorch.org/docs/stable/notes/multiprocessing.html#cuda-in-multiprocessing
-ENV VLLM_WORKER_MULTIPROC_METHOD=spawn
-
 # Performance environment variable.
 ENV HIP_FORCE_DEV_KERNARG=1