Fix rebase issues in targets.json for STM32 targets

Author: Donatien Garnier

targets/targets.json

@@ -2206,7 +2206,7 @@
         },
         "detect_code": ["0720"],
         "macros_add": ["USB_STM_HAL", "USBHOST_OTHER"],
-        "device_has_add": ["SERIAL_ASYNCH", "SERIAL_FC", "FLASH", "LOWPOWERTIMER"],
+        "device_has_add": ["SERIAL_ASYNCH", "SERIAL_FC", "FLASH"],
         "release_versions": ["2", "5"],
         "device_name": "STM32F401RE"
     },
@@ -2419,8 +2419,7 @@
             "SERIAL_FC",
             "TRNG",
             "FLASH",
-            "QSPI",
-            "WATCHDOG"
+            "QSPI"
         ],
         "bootloader_supported": true,
         "release_versions": ["2", "5"],
@@ -2511,8 +2510,7 @@
             "SERIAL_ASYNCH",
             "SERIAL_FC",
             "TRNG",
-            "FLASH",
-            "WATCHDOG"
+            "FLASH"
         ],
         "detect_code": ["0796"],
         "release_versions": ["2", "5"],