Drop python 3.7 (and 2.7) for recipes under dev-python/

Recipes with only 3.7 are left alone. Help with #8025.

dev-python/pyenchant/pyenchant-3.2.0.recipe

@@ -5,7 +5,7 @@ information, visit the project website."
 HOMEPAGE="http://pyenchant.github.io/pyenchant/"
 COPYRIGHT="2020 Dimitri Merejkowsky"
 LICENSE="GNU LGPL v2.1"
-REVISION="4"
+REVISION="5"
 SOURCE_URI="https://github.com/pyenchant/pyenchant/archive/v$portVersion.tar.gz"
 CHECKSUM_SHA256="3195bfc5cfbdeb8a60f9484390c2c982e59dd220d6f9a5f8418ba67551ead01a"
 
@@ -23,8 +23,8 @@ BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
 	"
 
-PYTHON_PACKAGES=(python3 python38 python39)
-PYTHON_VERSIONS=(3.7 3.8 3.9)
+PYTHON_PACKAGES=(python38 python39)
+PYTHON_VERSIONS=(3.8 3.9)
 for i in "${!PYTHON_PACKAGES[@]}"; do
 pythonPackage=${PYTHON_PACKAGES[i]}
 pythonVersion=${PYTHON_VERSIONS[$i]}
@@ -49,9 +49,6 @@ if [ "$targetArchitecture" = "x86_gcc2" ]; then
 	PROVIDES_python39+="
 		pyenchant_python39 = $portVersion
 		"
-	PROVIDES_python3+="
-		pyenchant_python3 = $portVersion
-		"
 fi