Fix several features of M1 and M2 (i know what the 7 is now ...) (#6507)

* Fix several features of M1 and M2 (i know what the 7 is now ...)

* 'THe' should be 'The'.

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* remove floating definition

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/platform/nrf52/main-nrf52.cpp

@@ -235,10 +235,6 @@ void nrf52InitSemiHosting()
 
 void nrf52Setup()
 {
-#ifdef USB_CHECK
-    pinMode(USB_CHECK, INPUT);
-#endif
-
 #ifdef ADC_V
     pinMode(ADC_V, INPUT);
 #endif
@@ -288,7 +284,7 @@ void cpuDeepSleep(uint32_t msecToWake)
 #endif
     // This may cause crashes as debug messages continue to flow.
     Serial.end();
-#ifdef PIN_SERIAL_RX1
+#ifdef PIN_SERIAL1_RX
     Serial1.end();
 #endif
     setBluetoothEnable(false);