Avoid requiring systemd for systemd rpm scriptlets

There is no need to require systemd as systemd correctly handles
reloading regardless of the transaction ordering (even if systemd is
installed _after_ the package that installs the unit file).

geoclue2.spec

@@ -1,6 +1,6 @@
 Name:           geoclue2
 Version:        2.5.7
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Geolocation service
 
 License:        GPLv2+
@@ -19,9 +19,6 @@ BuildRequires:  ModemManager-glib-devel
 BuildRequires:  systemd
 BuildRequires:  vala
 Requires(pre):  shadow-utils
-Requires(post): systemd
-Requires(preun): systemd
-Requires(postun): systemd
 Requires:       dbus
 
 Obsoletes:      geoclue2-server < 2.1.8
@@ -150,6 +147,9 @@ exit 0
 
 
 %changelog
+* Fri Oct 01 2021 Kalev Lember <klember@redhat.com> - 2.5.7-5
+- Avoid requiring systemd for systemd rpm scriptlets
+
 * Thu Jul 22 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.5.7-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild