main/postmarketos-base-ui: drop mvcfg (MR 5085)

All these config update are there since 2021. Having them there
serves no purpose, apart from increasing packaging complexity and
have some unnecessary files under /etc

main/postmarketos-base-ui/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-base-ui
 pkgver=22
-pkgrel=2
+pkgrel=3
 pkgdesc="Meta package for minimal postmarketOS UI base"
 url="https://postmarketos.org"
 arch="noarch"
@@ -126,7 +126,7 @@ bluez() {
 elogind() {
 	install_if="$pkgname=$pkgver-r$pkgrel elogind"
 	depends="sleep-inhibitor"
-	install="$subpkgname.pre-upgrade $subpkgname.post-install"
+	install="$subpkgname.post-install"
 	replaces="
 		elogind
 		sleep-inhibitor

main/postmarketos-base-ui/postmarketos-base-ui-elogind.pre-upgrade

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-postmarketos-mvcfg-pre-upgrade \
-	postmarketos-base-elogind \
-	/etc/elogind/logind.conf