Unconditionally install systemd unit
--- a/meson.build
+++ b/meson.build
@@ -76,17 +76,9 @@
                configuration: conf_data)
 install_man(updatedb_conf_man)

-if get_option('install_systemd')
-	systemd = dependency('systemd', required: false)
-	if systemd.found()
-		unitdir = systemd.get_pkgconfig_variable('systemdsystemunitdir')
		updatedb_service = configure_file(input: 'plocate-updatedb.service.in',
		       output: 'plocate-updatedb.service',
		       configuration: conf_data)
-		install_data(updatedb_service, install_dir: unitdir)
-		install_data('plocate-updatedb.timer', install_dir: unitdir)
-	endif
-endif

 # Requires having TurboPFor checked out, so not built by default.
 # Unless you have a recent Meson, there's no apparently good way