Avoid requiring systemd as per updated packaging guidelines

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

samba.spec

@@ -135,7 +135,7 @@
 %define samba_requires_eq()  %(LC_ALL="C" echo '%*' | xargs -r rpm -q --qf 'Requires: %%{name} = %%{epoch}:%%{version}\\n' | sed -e 's/ (none):/ /' -e 's/ 0:/ /' | grep -v "is not")
 
 %global samba_version 4.17.0
-%global baserelease 2
+%global baserelease 3
 # This should be rc1 or %%nil
 %global pre_release rc2
 
@@ -229,9 +229,6 @@ Source15:       samba.abignore
 Source201:      README.downgrade
 
 Requires(pre): /usr/sbin/groupadd
-Requires(post): systemd
-Requires(preun): systemd
-Requires(postun): systemd
 
 Requires(pre): %{name}-common = %{samba_depver}
 Requires: %{name}-common = %{samba_depver}
@@ -4208,6 +4205,9 @@ fi
 %endif
 
 %changelog
+* Thu Aug 18 2022 Kalev Lember <klember@redhat.com> - 2:4.17.0-0.3.rc2
+- Avoid requiring systemd as per updated packaging guidelines
+
 * Wed Aug 17 2022 Guenther Deschner <gdeschner@redhat.com> - 4.17.0rc2-2
 - resolves: #2118818 - Update to version 4.17.0rc2