Fix userdata jsons: older firmware has no regulation_mode allowed keys

Author: bouwew

tests/data/adam/adam_multiple_devices_per_zone.json

@@ -592,7 +592,6 @@
       "model": "Gateway",
       "model_id": "smile_open_therm",
       "name": "Adam",
-      "select_regulation_mode": "heating",
       "sensors": {
         "outdoor_temperature": 7.81
       },

tests/data/adam/adam_zone_per_device.json

@@ -576,7 +576,6 @@
       "model": "Gateway",
       "model_id": "smile_open_therm",
       "name": "Adam",
-      "select_regulation_mode": "heating",
       "sensors": {
         "outdoor_temperature": 7.69
       },