Remove duplicated if statement

Author: pennam

src/utility/watchdog/Watchdog.cpp

@@ -76,17 +76,15 @@ void watchdog_enable()
 
 void watchdog_reset()
 {
-#ifdef ARDUINO_ARCH_SAMD
   if (is_watchdog_enabled) {
+#ifdef ARDUINO_ARCH_SAMD
     Watchdog.reset();
-  }
 #elif ARDUINO_ARCH_MBED
-  if (is_watchdog_enabled) {
     hal_watchdog_kick();
-  }
 #else
 # error "Unknown ARDUINO_ARCH. Supported architectures are ARDUINO_ARCH_SAMD and ARDUINO_ARCH_MBED."
 #endif
+  }
 }
 
 #ifdef ARDUINO_ARCH_SAMD