sphinx: clean up, drop _python39 package. (#11605)

Also cleanup and drop _python39 from related recipes:

- alabaster
- sphinx_rtd_theme
- sphinx_argparse
- sphinxcontrib_applehelp
- sphinxcontrib_devhelp
- sphinxcontrib_htmlhelp
- sphinxcontrib_jquery
- sphinxcontrib_jsmath
- sphinxcontrib_qthelp
- sphinxcontrib_serializinghtml

dev-python/sphinx_rtd_theme/sphinx_rtd_theme-1.2.1.recipe

@@ -13,7 +13,7 @@ COPYRIGHT="2013-2018 Dave Snider, Read the Docs, Inc. & contributors
 	2010-2015, Łukasz Dziedzic"
 LICENSE="MIT
 	OFL"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://files.pythonhosted.org/packages/source/s/sphinx_rtd_theme/sphinx_rtd_theme-$portVersion.tar.gz"
 CHECKSUM_SHA256="cf9a7dc0352cf179c538891cb28d6fad6391117d4e21c891776ab41dd6c8ff70"
 
@@ -30,11 +30,11 @@ BUILD_REQUIRES="
 	haiku_devel
 	"
 
-PYTHON_PACKAGES=(python39 python310)
-PYTHON_VERSIONS=(3.9 3.10)
-for i in "${!PYTHON_PACKAGES[@]}"; do
-	pythonPackage=${PYTHON_PACKAGES[i]}
+PYTHON_VERSIONS=(3.10)
+
+for i in "${!PYTHON_VERSIONS[@]}"; do
 	pythonVersion=${PYTHON_VERSIONS[$i]}
+	pythonPackage=python${pythonVersion//.}
 
 	eval "PROVIDES_$pythonPackage=\"
 		${portName}_$pythonPackage = $portVersion
@@ -53,9 +53,9 @@ done
 
 INSTALL()
 {
-	for i in "${!PYTHON_PACKAGES[@]}"; do
-		pythonPackage=${PYTHON_PACKAGES[i]}
+	for i in "${!PYTHON_VERSIONS[@]}"; do
 		pythonVersion=${PYTHON_VERSIONS[$i]}
+		pythonPackage=python${pythonVersion//.}
 
 		python=python$pythonVersion
 		installLocation=$prefix/lib/$python/vendor-packages/