media-sound/lilypond: Drop dependency on dev-tex/metapost.

dev-tex/metapost and app-eselect/eselect-mpost are slated for removal.
Also remove eselect-mpost magic in pkg_setup().

Bug: https://bugs.gentoo.org/733862
Package-Manager: Portage-3.0.0, Repoman-2.3.23
Signed-off-by: Ulrich Müller <ulm@gentoo.org>

media-sound/lilypond/lilypond-2.21.1.ebuild

@@ -24,11 +24,8 @@ IUSE="debug emacs guile2 profile vim-syntax"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
 BDEPEND="
-	>=dev-texlive/texlive-metapost-2013
-	|| (
-		>=app-text/texlive-core-2013
-		>=dev-tex/metapost-1.803
-	)
+	>=app-text/texlive-core-2020
+	>=dev-texlive/texlive-metapost-2020
 	>=sys-apps/texinfo-4.11
 	>=sys-devel/bison-2.0
 	sys-devel/flex
@@ -63,18 +60,6 @@ PATCHES=(
 
 DOCS=( DEDICATION HACKING README.txt ROADMAP )
 
-pkg_setup() {
-	# make sure >=metapost-1.803 is selected if it's installed, bug 498704
-	if [[ ${MERGE_TYPE} != binary ]] && has_version ">=dev-tex/metapost-1.803" ; then
-		if [[ $(readlink "${EROOT}"/usr/bin/mpost) =~ mpost-texlive-* ]] ; then
-			einfo "Updating metapost symlink"
-			eselect mpost update || die
-		fi
-	fi
-
-	python-single-r1_pkg_setup
-}
-
 src_prepare() {
 	default
 

media-sound/lilypond/lilypond-9999.ebuild

@@ -24,11 +24,8 @@ IUSE="debug emacs guile2 profile vim-syntax"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
 BDEPEND="
-	>=dev-texlive/texlive-metapost-2013
-	|| (
-		>=app-text/texlive-core-2013
-		>=dev-tex/metapost-1.803
-	)
+	>=app-text/texlive-core-2020
+	>=dev-texlive/texlive-metapost-2020
 	>=sys-apps/texinfo-4.11
 	>=sys-devel/bison-2.0
 	sys-devel/flex
@@ -63,18 +60,6 @@ PATCHES=(
 
 DOCS=( DEDICATION HACKING README.txt ROADMAP )
 
-pkg_setup() {
-	# make sure >=metapost-1.803 is selected if it's installed, bug 498704
-	if [[ ${MERGE_TYPE} != binary ]] && has_version ">=dev-tex/metapost-1.803" ; then
-		if [[ $(readlink "${EROOT}"/usr/bin/mpost) =~ mpost-texlive-* ]] ; then
-			einfo "Updating metapost symlink"
-			eselect mpost update || die
-		fi
-	fi
-
-	python-single-r1_pkg_setup
-}
-
 src_prepare() {
 	default