stm32: update adc examples

tests/stm32/src/bin/dac.rs

@@ -13,7 +13,7 @@ use embassy_executor::Spawner;
 use embassy_stm32::adc::Adc;
 use embassy_stm32::dac::{DacCh1, Value};
 use embassy_stm32::dma::NoDma;
-use embassy_time::{Delay, Timer};
+use embassy_time::Timer;
 use micromath::F32Ext;
 use {defmt_rtt as _, panic_probe as _};
 
@@ -28,7 +28,7 @@ async fn main(_spawner: Spawner) {
     let mut adc_pin = unsafe { core::ptr::read(&dac_pin) };
 
     let mut dac = DacCh1::new(dac, NoDma, dac_pin);
-    let mut adc = Adc::new(adc, &mut Delay);
+    let mut adc = Adc::new(adc);
 
     #[cfg(feature = "stm32h755zi")]
     let normalization_factor = 256;