remove old syncthing option insecureAllowOldTLSVersions

- was previously set in our config-template.xml
- Syncthing removed this in v1.29.6 and has forced TLS 1.3
  since.

Signed-off-by: Tesshu Flower <tflower@redhat.com>

Author: tesshuflower

mover-syncthing/config-template.xml

@@ -47,7 +47,6 @@
     <options>
         <announceLANAddresses>false</announceLANAddresses>
         <globalAnnounceEnabled>false</globalAnnounceEnabled>
-        <insecureAllowOldTLSVersions>true</insecureAllowOldTLSVersions>
         <listenAddress>tcp://0.0.0.0:22000</listenAddress>
         <localAnnounceEnabled>false</localAnnounceEnabled>
         <localAnnouncePort>21027</localAnnouncePort>