Disable RTC support for UBLOX_EVK_ODIN_W2.

This board inherits from STM_FAMILY, but drivers for this board are not consistent with the new standards.
This board needs to be disabled for now.

Author: mprse

targets/targets.json

@@ -2168,6 +2168,7 @@
         "inherits": ["MODULE_UBLOX_ODIN_W2"],
         "supported_form_factors": ["ARDUINO"],
         "release_versions": ["5"],
+        "device_has_remove": ["RTC"],
         "config": {
             "stdio_uart_tx_help": {
                 "help": "Value: D8(default) or D1"