[Chore] cleanup license indicators in light of SPDX (vllm-project#17259)

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>
Co-authored-by: Russell Bryant <rbryant@redhat.com>

Author: 2 people

pyproject.toml

@@ -15,15 +15,15 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "vllm"
 authors = [{name = "vLLM Team"}]
-license = { "file"= "LICENSE" }
+license = "Apache-2.0"
+license-files = ["LICENSE"]
 readme = "README.md"
 description = "A high-throughput and memory-efficient inference and serving engine for LLMs"
 classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
-    "License :: OSI Approved :: Apache Software License",
     "Intended Audience :: Developers",
     "Intended Audience :: Information Technology",
     "Intended Audience :: Science/Research",