fastd: Remove check for Debian stretch.

Signed-off-by: Maximilian Wilhelm <max@sdn.clinic>

fastd/fastd.conf

@@ -14,7 +14,7 @@ interface "{{ site }}_{{ network }}";
 {% if network_type == 'nodes' and 'batman_gw' in node_config.get ('roles') %}
 method "null";			# Null-cipher for node VPNs
 {%- endif %}
-{%- if 'aes' in grains.cpu_flags and grains.oscodename not in [ "stretch" ] %}
+{%- if 'aes' in grains.cpu_flags %}
 method "aes128-gcm";
 method "aes128-ctr+umac";
 {%- else %}