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/markdown/markdown-3.1.1.recipe

@@ -8,7 +8,7 @@ COPYRIGHT="2007, 2008 The Python Markdown Project
 	2004, 2005, 2006 Yuri Takhteyev
 	2004 Manfred Stienstra"
 LICENSE="BSD (3-clause)"
-REVISION="2"
+REVISION="3"
 SOURCE_URI="https://files.pythonhosted.org/packages/source/M/Markdown/Markdown-$portVersion.tar.gz"
 CHECKSUM_SHA256="2e50876bcdd74517e7b71f3e7a76102050edec255b3983403f1a63e7c8a41e7a"
 SOURCE_DIR="Markdown-$portVersion"
@@ -26,8 +26,8 @@ BUILD_REQUIRES="
 	haiku_devel
 	"
 
-PYTHON_PACKAGES=(python python3 python38 python39)
-PYTHON_VERSIONS=(2.7 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]}
@@ -44,20 +44,11 @@ BUILD_PREREQUIRES="$BUILD_PREREQUIRES
 	cmd:python$pythonVersion"
 done
 
-PROVIDES_python="$PROVIDES_python
-	cmd:markdown_py
-	"
-REPLACES_python="
-	python_markdown
-	"
-PROVIDES_python3="$PROVIDES_python3
-	cmd:markdown_py3
-	"
 PROVIDES_python38="$PROVIDES_python38
 	cmd:markdown_py38
 	"
 PROVIDES_python39="$PROVIDES_python39
-	cmd:markdown_py39
+	cmd:markdown_py
 	"
 
 INSTALL()
@@ -74,15 +65,9 @@ INSTALL()
 		$python setup.py build install \
 			--root=/ --prefix=$prefix
 
-		if [ $pythonPackage = python3 ]; then
-			mv $binDir/markdown_py $binDir/markdown_py3
-		fi
 		if [ $pythonPackage = python38 ]; then
 			mv $binDir/markdown_py $binDir/markdown_py38
 		fi
-		if [ $pythonPackage = python39 ]; then
-			mv $binDir/markdown_py $binDir/markdown_py39
-		fi
 		packageEntries  $pythonPackage \
 			$prefix/lib/python* \
 			$binDir