[airos] switched system.date to disabled by default

Author: edoput

netjsonconfig/backends/airos/converters.py

@@ -524,7 +524,7 @@ def to_intermediate(self):
                 'version': 0,
             },
             'date': {
-                'status': 'enabled',
+                'status': 'disabled',
             },
             'external': {
                 'reset': 'enabled',