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/chardet/chardet-4.0.0.recipe

@@ -3,7 +3,7 @@ DESCRIPTION="Python module for character encoding auto-detection."
 HOMEPAGE="https://github.com/chardet/chardet"
 COPYRIGHT="2011-2022 Mark Pilgrim, Dan Blanchard"
 LICENSE="GNU LGPL v2.1"
-REVISION="2"
+REVISION="3"
 SOURCE_URI="https://pypi.io/packages/source/${portName:0:1}/$portName/${portName}-$portVersion.tar.gz"
 CHECKSUM_SHA256="0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa"
 
@@ -20,8 +20,8 @@ BUILD_REQUIRES="
 	haiku_devel
 	"
 
-PYTHON_PACKAGES=(python python3 python38 python39 python310)
-PYTHON_VERSIONS=(2.7 3.7 3.8 3.9 3.10)
+PYTHON_PACKAGES=(python38 python39 python310)
+PYTHON_VERSIONS=(3.8 3.9 3.10)
 for i in "${!PYTHON_PACKAGES[@]}"; do
 pythonPackage=${PYTHON_PACKAGES[i]}
 pythonVersion=${PYTHON_VERSIONS[$i]}
@@ -38,17 +38,14 @@ BUILD_PREREQUIRES="$BUILD_PREREQUIRES
 	cmd:python$pythonVersion"
 done
 
-PROVIDES_python="$PROVIDES_python
-	cmd:chardetect
-	"
-PROVIDES_python3="$PROVIDES_python3
-	cmd:chardetect3
-	"
 PROVIDES_python38="$PROVIDES_python38
 	cmd:chardetect3.8
 	"
 PROVIDES_python39="$PROVIDES_python39
-	cmd:chardetect3.9
+	cmd:chardetect
+	"
+PROVIDES_python310="$PROVIDES_python310
+	cmd:chardetect3.10
 	"
 
 INSTALL()
@@ -65,21 +62,15 @@ INSTALL()
 		$python setup.py build install \
 			--root=/ --prefix=$prefix
 
-		if [ $pythonPackage = python3 ]; then
-			for f in $binDir/*; do
-				mv $f ${f}3
-			done
-		fi
-
 		if [ $pythonPackage = python38 ]; then
 			for f in $binDir/*; do
 				mv $f ${f}3.8
 			done
 		fi
 
-		if [ $pythonPackage = python39 ]; then
+		if [ $pythonPackage = python310 ]; then
 			for f in $binDir/*; do
-				mv $f ${f}3.9
+				mv $f ${f}3.10
 			done
 		fi