[ADC] Fix redundant code

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

cores/arduino/stm32/analog.cpp

@@ -845,7 +845,6 @@ uint16_t adc_read_value(PinName pin)
 #if defined(STM32G0xx)
   AdcHandle.Init.SamplingTimeCommon1   = samplingTime;              /* Set sampling time common to a group of channels. */
   AdcHandle.Init.SamplingTimeCommon2   = samplingTime;              /* Set sampling time common to a group of channels, second common setting possible.*/
-  AdcHandle.Init.TriggerFrequencyMode  = ADC_TRIGGER_FREQ_HIGH;
 #endif
 #if defined(STM32L0xx)
   AdcHandle.Init.LowPowerFrequencyMode = DISABLE;                       /* To be enabled only if ADC clock < 2.8 MHz */