Update iot-gate-imx8plus-d1d8 to remove Wifi and BT

This board does not have a wireless module

Change-type: patch
Signed-off-by: Alexandru Costache <alexandru@balena.io>

Author: acostach

contracts/hw.device-type/iot-gate-imx8plus-d1d8/contract.json

@@ -15,8 +15,8 @@
     "hdmi": false,
     "led": false,
     "connectivity": {
-      "bluetooth": true,
-      "wifi": true
+      "bluetooth": false,
+      "wifi": false
     },
     "storage": {
       "internal": true