wheel: drop Python 3.9 support.

All on-tree users already target 3.10 only.

dev-python/wheel/wheel-0.41.2.recipe

@@ -12,7 +12,7 @@ stable, public API."
 HOMEPAGE="https://pypi.org/project/wheel"
 COPYRIGHT="2012 Daniel Holth and contributors"
 LICENSE="MIT"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://files.pythonhosted.org/packages/py3/${portName:0:1}/$portName/$portName-$portVersion-py3-none-any.whl#noarchive"
 CHECKSUM_SHA256="75909db2664838d015e3d9139004ee16711748a52c8f336b52882266540215d8"
 
@@ -30,12 +30,11 @@ BUILD_REQUIRES="
 	"
 
 # Add more versions here as necessary:
-PYTHON_VERSIONS=(3.9 3.10)
+PYTHON_VERSIONS=(3.10)
 # And don't forget to change this if the default Python version on Haiku changes:
 defaultVersion=3.10
 
-for i in "${!PYTHON_VERSIONS[@]}"; do
-	pythonVersion=${PYTHON_VERSIONS[$i]}
+for pythonVersion in ${PYTHON_VERSIONS[@]}; do
 	pythonPackage=python${pythonVersion//.}
 
 	eval "PROVIDES_$pythonPackage=\"
@@ -64,8 +63,7 @@ done
 
 INSTALL()
 {
-	for i in "${!PYTHON_VERSIONS[@]}"; do
-		pythonVersion=${PYTHON_VERSIONS[$i]}
+	for pythonVersion in ${PYTHON_VERSIONS[@]}; do
 		pythonPackage=python${pythonVersion//.}
 
 		python=python$pythonVersion