packaging: drop Python 3.9 support.

All users on-tree already target 3.10 only.

dev-python/packaging/packaging-24.1.recipe

@@ -4,7 +4,7 @@ version handling, specifiers, markers, requirements, tags, utilities."
 HOMEPAGE="https://pypi.python.org/pypi/packaging"
 COPYRIGHT="Donald Stufft and individual contributors"
 LICENSE="BSD (2-clause)"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://pypi.io/packages/source/${portName:0:1}/$portName/$portName-$portVersion.tar.gz"
 CHECKSUM_SHA256="026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002"
 
@@ -21,10 +21,9 @@ BUILD_REQUIRES="
 	haiku_devel
 	"
 
-PYTHON_VERSIONS=(3.9 3.10)
+PYTHON_VERSIONS=(3.10)
 
-for i in "${!PYTHON_VERSIONS[@]}"; do
-	pythonVersion=${PYTHON_VERSIONS[$i]}
+for pythonVersion in ${PYTHON_VERSIONS[@]}; do
 	pythonPackage=python${pythonVersion//.}
 
 	eval "PROVIDES_$pythonPackage=\"
@@ -47,8 +46,7 @@ done
 
 INSTALL()
 {
-	for i in "${!PYTHON_VERSIONS[@]}"; do
-		pythonVersion=${PYTHON_VERSIONS[$i]}
+	for pythonVersion in ${PYTHON_VERSIONS[@]}; do
 		pythonPackage=python${pythonVersion//.}
 
 		python=python$pythonVersion