python3-Markdown: remove unneeded alternatives

Closes: #25660 [via git-merge-pr]

srcpkgs/python3-Markdown/template

@@ -1,7 +1,7 @@
 # Template file for 'python3-Markdown'
 pkgname=python3-Markdown
 version=3.3.1
-revision=1
+revision=2
 wrksrc="Markdown-${version}"
 build_style=python3-module
 hostmakedepends="python3-setuptools"
@@ -13,9 +13,8 @@ license="BSD-3-Clause"
 homepage="https://github.com/Python-Markdown/markdown"
 distfiles="${PYPI_SITE}/M/Markdown/Markdown-${version}.tar.gz"
 checksum=c3ce9ebb035c078cac0f2036068d054e7dc34354eeecc49c173c33c96b124af6
-alternatives="markdown:markdown_py:/usr/bin/markdown_py3"
+conflicts="python-Markdown>=0"
 
 post_install() {
 	vlicense LICENSE.md LICENSE
-	mv ${DESTDIR}/usr/bin/markdown_py ${DESTDIR}/usr/bin/markdown_py3
 }