Merge branch 'disco-l072_adc_vbat' of https://github.com/bcostm/mbed-os into dev_rollup

Author: 0xc0170

targets/TARGET_STM/TARGET_STM32L0/TARGET_STM32L072xZ/TARGET_DISCO_L072CZ_LRWAN1/PinNames.h

@@ -100,7 +100,6 @@ typedef enum {
     // ADC internal channels
     ADC_TEMP = 0xF0,
     ADC_VREF = 0xF1,
-    ADC_VBAT = 0xF2,
 
     // Arduino connector namings
     A0          = PA_0,