_python* packages: do not use Python 3.9 as "defaultVersion" anymore. (#12589)

While switching to 3.10 as default, lets just drop the 3.9 versions of these packages.

----

Checked runtime and build dependencies, but only tried a build of `hatchling` locally. I'll merge as is, and if something breaks, will fix later on.

dev-python/breathe/breathe-4.35.0.recipe

@@ -4,7 +4,7 @@ Doxygen xml output."
 HOMEPAGE="https://github.com/michaeljones/breathe"
 COPYRIGHT="2009, Michael Jones"
 LICENSE="BSD (2-clause)"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://files.pythonhosted.org/packages/source/b/breathe/breathe-$portVersion.tar.gz"
 CHECKSUM_SHA256="5165541c3c67b6c7adde8b3ecfe895c6f7844783c4076b6d8d287e4f33d62386"
 
@@ -21,12 +21,11 @@ BUILD_REQUIRES="
 	haiku_devel
 	"
 
-PYTHON_PACKAGES=(python39 python310)
-PYTHON_VERSIONS=(3.9 3.10)
-defaultVersion=3.9
-for i in "${!PYTHON_PACKAGES[@]}"; do
-	pythonPackage=${PYTHON_PACKAGES[i]}
-	pythonVersion=${PYTHON_VERSIONS[$i]}
+PYTHON_VERSIONS=(3.10)
+defaultVersion=3.10
+
+for pythonVersion in ${PYTHON_VERSIONS[@]}; do
+	pythonPackage=python${pythonVersion//.}
 
 	eval "PROVIDES_$pythonPackage=\"
 		${portName}_$pythonPackage = $portVersion
@@ -53,9 +52,8 @@ done
 
 INSTALL()
 {
-	for i in "${!PYTHON_PACKAGES[@]}"; do
-		pythonPackage=${PYTHON_PACKAGES[i]}
-		pythonVersion=${PYTHON_VERSIONS[$i]}
+	for pythonVersion in ${PYTHON_VERSIONS[@]}; do
+		pythonPackage=python${pythonVersion//.}
 
 		python=python$pythonVersion
 		installLocation=$prefix/lib/$python/vendor-packages/