suppress (don't fix) compiler warnings for 3rd party libraries - STM32F4 and STM32F7

[nerdCopter]

suppresses (does not attempt to fix 3rd party libraries):

./lib/main/STM32F4/Drivers/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_spi.c: In function 'I2S_Init':
./lib/main/STM32F4/Drivers/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_spi.c:426:7: warning: this condition has identical branches [-Wduplicated-branches]
  426 |     if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_PLLSRC_HSE)
      |       ^
./lib/main/STM32F7/Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_uart.c: In function 'HAL_UART_Init':
./lib/main/STM32F7/Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_uart.c:251:5: warning: this condition has identical branches [-Wduplicated-branches]
  251 |   if(huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
      |     ^

ref: https://stackoverflow.com/a/76435158/2013805