Remove MTB_UBLOX_NINA_B1 target

Author: MarceloSalazar

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52832/TARGET_MTB_UBLOX_NINA_B1/PinNames.h

@@ -10318,35 +10318,6 @@
             "1237"
         ]
     },
-    "MTB_UBLOX_NINA_B1": {
-        "inherits": [
-            "MCU_NRF52832"
-        ],
-        "release_versions": [
-            "5"
-        ],
-        "device_name": "nRF52832_xxAA",
-        "macros_add": [
-            "CONFIG_GPIO_AS_PINRESET",
-            "NRF52_PAN_12",
-            "NRF52_PAN_15",
-            "NRF52_PAN_20",
-            "NRF52_PAN_30",
-            "NRF52_PAN_31",
-            "NRF52_PAN_36",
-            "NRF52_PAN_51",
-            "NRF52_PAN_53",
-            "NRF52_PAN_54",
-            "NRF52_PAN_55",
-            "NRF52_PAN_58",
-            "NRF52_PAN_62",
-            "NRF52_PAN_63",
-            "NRF52_PAN_64"
-        ],
-        "detect_code": [
-            "0455"
-        ]
-    },
     "DELTA_DFBM_NQ620": {
         "supported_form_factors": [
             "ARDUINO"