🎨 Clean up warnings / extra check (#24163)

Marlin/src/gcode/calibrate/G76_M871.cpp

@@ -82,13 +82,13 @@
  *  - `P` - Run probe temperature calibration.
  */
 
-static void say_waiting_for()               { SERIAL_ECHOPGM("Waiting for "); }
-static void say_waiting_for_probe_heating() { say_waiting_for(); SERIAL_ECHOLNPGM("probe heating."); }
-static void say_successfully_calibrated()   { SERIAL_ECHOPGM("Successfully calibrated"); }
-static void say_failed_to_calibrate()       { SERIAL_ECHOPGM("!Failed to calibrate"); }
-
 #if BOTH(PTC_PROBE, PTC_BED)
 
+  static void say_waiting_for()               { SERIAL_ECHOPGM("Waiting for "); }
+  static void say_waiting_for_probe_heating() { say_waiting_for(); SERIAL_ECHOLNPGM("probe heating."); }
+  static void say_successfully_calibrated()   { SERIAL_ECHOPGM("Successfully calibrated"); }
+  static void say_failed_to_calibrate()       { SERIAL_ECHOPGM("!Failed to calibrate"); }
+
   void GcodeSuite::G76() {
     auto report_temps = [](millis_t &ntr, millis_t timeout=0) {
       idle_no_sleep();

Marlin/src/inc/SanityCheck.h

@@ -2381,16 +2381,6 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   #endif
 #endif
 
-#if TEMP_SENSOR_PROBE
-  #if !PIN_EXISTS(TEMP_PROBE)
-    #error "TEMP_SENSOR_PROBE requires TEMP_PROBE_PIN."
-  #elif !HAS_TEMP_ADC_PROBE
-    #error "TEMP_PROBE_PIN must be an ADC pin."
-  #elif DISABLED(FIX_MOUNTED_PROBE)
-    #error "TEMP_SENSOR_PROBE shouldn't be set without FIX_MOUNTED_PROBE."
-  #endif
-#endif
-
 #if TEMP_SENSOR_BOARD
   #if !PIN_EXISTS(TEMP_BOARD)
     #error "TEMP_SENSOR_BOARD requires TEMP_BOARD_PIN."