[Bugfix] fix dp parallel + tp > 1 offline inference port conflict (#4539)

### What this PR does / why we need it?
fix dp parallel + tp > 1 offline inference port conflict

issue import PR:https://github.com/vllm-project/vllm-ascend/pull/429


- vLLM version: v0.11.2
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.2

---------

Signed-off-by: leo-pony <nengjunma@outlook.com>

vllm_ascend/patch/platform/patch_distributed.py

@@ -18,32 +18,10 @@
 # This file is a part of the vllm-ascend project.
 
 import torch
-import vllm.envs as envs_vllm
-from vllm.config import ParallelConfig
 
 from vllm_ascend.utils import AscendDeviceType, get_ascend_device_type
 
 
-def parallel_config_get_dp_port(self) -> int:
-    """
-    We might need to initialize process groups in multiple
-    processes that is related to data parallelism,
-    e.g. both in the worker and in the engine, which
-    can live in different processes. To avoid port conflicts, we
-    increment the port number each time we need to initialize a
-    new process group related to data parallelism.
-    """
-    answer = self.data_parallel_master_port
-    self.data_parallel_master_port += 1
-
-    # NOTE: Get port from envs directly when using torchrun
-    port = envs_vllm.VLLM_DP_MASTER_PORT if envs_vllm.VLLM_DP_MASTER_PORT else answer
-    return port
-
-
-ParallelConfig.get_next_dp_init_port = parallel_config_get_dp_port
-
-
 class NullHandle:
 
     def __init__(self):