use license field instead of license classifier

Author: Liam-DeVoe

pyproject.toml

@@ -17,6 +17,9 @@ name = "hypofuzz"
 dynamic = ["version"]
 description = "Adaptive fuzzing for property-based tests"
 readme = "README.md"
+# custom license name. See https://spdx.github.io/spdx-spec/v2.2.2/other-licensing-information-detected/
+# and https://peps.python.org/pep-0639/ (grep "custom license")
+license = "LicenseRef-HypoFuzz"
 license-files = ["LICENSE", "CONTRIBUTING.md"]
 requires-python = ">=3.10"
 authors = [
@@ -40,8 +43,6 @@ classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Framework :: Hypothesis",
     "Intended Audience :: Developers",
-    "License :: Other/Proprietary License",
-    "License :: Free for non-commercial use",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",