build: move homepage spec

Author: MilesCranmer

pyproject.toml

@@ -8,7 +8,6 @@ version = "0.9.23"
 description = "Julia and Python in seamless harmony"
 readme = "README.md"
 readme-content-type = "text/markdown"
-homepage = "http://github.com/JuliaPy/PythonCall.jl"
 classifiers = [
     "Programming Language :: Python :: 3",
     "License :: OSI Approved :: MIT License",