pyproject.toml: Remove unused cibuildwheel section

Author: Matthias Koeppe

pyproject.toml

@@ -24,9 +24,3 @@ keywords = ["PARI/GP number theory"]
 
 [project.urls]
 Homepage = "https://github.com/sagemath/cypari2"
-[tool.cibuildwheel]
-before-all = """
-  apt-get install --yes wget sudo || yum install -y wget sudo || brew install bash coreutils
-  bash -x ./.install-pari.sh
-"""
-environment = { PARI_VERSION="pari-2.15.4" }