No need for random service reload/restart, that should be handled by the auto-regenconf of the core after the restore

data/hooks/restore/05-conf_ldap

@@ -50,5 +50,5 @@ slapadd -F /etc/ldap/slapd.d -b dc=yunohost,dc=org \
   || die 2 "Unable to restore LDAP database"
 chown -R openldap: /var/lib/ldap
 
-service slapd start
+systemctl start slapd
 rm -rf "$TMPDIR"

data/hooks/restore/21-conf_ynh_certs

@@ -3,5 +3,3 @@ backup_dir="$1/conf/ynh/certs"
 mkdir -p /etc/yunohost/certs/
 
 cp -a $backup_dir/. /etc/yunohost/certs/
-service nginx reload
-service metronome reload

data/hooks/restore/23-data_mail

@@ -2,7 +2,3 @@ backup_dir="$1/data/mail"
 
 cp -a $backup_dir/. /var/mail/ || echo 'No mail found'
 chown -R vmail:mail /var/mail/
-
-# Restart services to use migrated certs
-service postfix restart
-service dovecot restart