strongswan: cleaned up settings when 'prefix_auto=1' (no need to check non-exisiting variables)

security/strongswan/strongswan.conf

@@ -14,12 +14,8 @@
 # --- SDE-COPYRIGHT-NOTE-END ---
 
 if [ $prefix_auto = 1 ] ; then
-        if [ "$ROCKCFG_PKG_STRONGSWAN_PREFIX" ] ; then
-          prefix="$ROCKCFG_PKG_STRONGSWAN_PREFIX"
-        else
-          prefix="opt/strongswan"
-        fi
-        set_confopt
+	prefix="opt/strongswan"
+	set_confopt
 fi
 
 # checking if we can enable CRL fetching using HTTP