Use native ADC resolution where possible (#15719)

Marlin/src/module/temperature.h

@@ -217,7 +217,6 @@ typedef struct { int16_t raw_min, raw_max; } raw_range_t;
 typedef struct { int16_t mintemp, maxtemp; } celsius_range_t;
 typedef struct { int16_t raw_min, raw_max, mintemp, maxtemp; } temp_range_t;
 
-#define THERMISTOR_ADC_RESOLUTION       1024           // 10-bit ADC .. shame to waste 12-bits of resolution on 32-bit
 #define THERMISTOR_ABS_ZERO_C           -273.15f       // bbbbrrrrr cold !
 #define THERMISTOR_RESISTANCE_NOMINAL_C 25.0f          // mmmmm comfortable