main/dbus: Remove uuid generation from post-install

In the past, dbus uuid generation was done as a post install step. Years
later, this was copied/moved into the start-up script. This makes a lot
of sense, where in the post-install step it does not.

More importantly however, when bootstrapping alpine into a directory,
with the dbus package, dbus-uuidgen fails during the post-install phase
due to missing /dev/urandom, which is expected not to exist in a
alternative root, as can be seen in the following error

  Failed to generate UUID: Could not open /dev/urandom: No such file or directory
  ERROR: dbus-1.12.16-r0.post-install: script exited with error 1

Lets drop this line all together as it serves no purpose with the UUID
being generated at startup anyway.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>

main/dbus/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=dbus
 pkgver=1.12.16
-pkgrel=1
+pkgrel=2
 pkgdesc="Freedesktop.org message bus system"
 options="!check" # Introduces circular dependency with xorg-server (xvfb-run -> xvfb)
 url="https://www.freedesktop.org/Software/dbus"
@@ -14,7 +14,7 @@ depends_dev="util-linux-dev"
 makedepends="$depends_dev expat-dev libx11-dev autoconf automake libtool xmlto
 	libsm-dev glib-dev"
 checkdepends="xvfb-run"
-install="$pkgname.pre-install $pkgname.post-install"
+install="$pkgname.pre-install"
 source="https://dbus.freedesktop.org/releases/dbus/dbus-$pkgver.tar.gz
 	$pkgname.initd
 	"

main/dbus/dbus.post-install

@@ -1,3 +0,0 @@
-#!/bin/sh
-
-exec dbus-uuidgen --ensure=/etc/machine-id