community/lightdm: fix circular dependency

remove lightdm-gtk-greeter from depends to fix circular dependency:
lightdm -> lightdm-gtk-greeter -> lightdm-dev

community/lightdm/APKBUILD

@@ -2,12 +2,12 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=lightdm
 pkgver=1.28.0
-pkgrel=2
+pkgrel=3
 pkgdesc="A cross-desktop display manager"
 url="https://www.freedesktop.org/wiki/Software/LightDM"
 arch="all"
 license="GPL-3.0-or-later"
-depends="dbus xinit accountsservice gnome-themes-standard lightdm-gtk-greeter
+depends="dbus xinit accountsservice gnome-themes-standard
 	adwaita-icon-theme"
 makedepends="linux-pam-dev gtk+3.0-dev libxext-dev libxklavier-dev
 	autoconf automake libtool gobject-introspection-dev itstool