Fix model docstrings (#1764)

vllm/model_executor/models/qwen.py

@@ -3,11 +3,7 @@
 # https://huggingface.co/Qwen/Qwen-7B/blob/main/modeling_qwen.py
 # Copyright (c) Alibaba Cloud.
 # LICENSE: https://huggingface.co/Qwen/Qwen-7B/blob/main/LICENSE
-"""Inference-only QWen model compatible with HuggingFace weights.
-
-The input of the model is flattened to a 1D tensor of tokens. The model uses
-InputMetadata to extract the original 2D shape of the input.
-"""
+"""Inference-only QWen model compatible with HuggingFace weights."""
 from typing import Any, Dict, List, Optional, Tuple
 
 import torch