Fix the examples

Author: jonas-schievink

examples/button_irq.rs

@@ -39,10 +39,7 @@ fn main() -> ! {
     // Configure PB2 as input.
     let button = gpiob.pb2.into_pull_up_input();
 
-    #[cfg(feature = "stm32l0x1")]
     let mut syscfg = SYSCFG::new(dp.SYSCFG, &mut rcc);
-    #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-    let mut syscfg = SYSCFG::new(dp.SYSCFG_COMP, &mut rcc);
 
     // Configure the external interrupt on the falling edge for the pin 0.
     let exti = dp.EXTI;

examples/button_irq_rtfm.rs

@@ -28,10 +28,7 @@ const APP: () = {
         // Configure PB2 as input.
         let button = gpiob.pb2.into_pull_up_input();
 
-        #[cfg(feature = "stm32l0x1")]
         let mut syscfg = SYSCFG::new(device.SYSCFG, &mut rcc);
-        #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-        let mut syscfg = SYSCFG::new(device.SYSCFG_COMP, &mut rcc);
 
         // Configure the external interrupt on the falling edge for the pin 0.
         let exti = device.EXTI;

examples/exti_wakeup.rs

@@ -29,10 +29,7 @@ fn main() -> ! {
     let button = gpiob.pb2.into_floating_input();
     let mut led = gpiob.pb6.into_push_pull_output();
 
-    #[cfg(feature = "stm32l0x1")]
     let mut syscfg = SYSCFG::new(dp.SYSCFG, &mut rcc);
-    #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-    let mut syscfg = SYSCFG::new(dp.SYSCFG_COMP, &mut rcc);
 
     exti.listen(
         &mut syscfg,

examples/pwr.rs

@@ -44,10 +44,7 @@ fn main() -> ! {
 
     let mut led = gpiob.pb2.into_push_pull_output().downgrade();
 
-    #[cfg(feature = "stm32l0x1")]
     let mut syscfg = SYSCFG::new(dp.SYSCFG, &mut rcc);
-    #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-    let mut syscfg = SYSCFG::new(dp.SYSCFG_COMP, &mut rcc);
 
     let instant = Instant::new()
         .set_year(19)

examples/rtc_wakeup.rs

@@ -32,10 +32,7 @@ fn main() -> ! {
     let mut exti = dp.EXTI;
     let mut pwr = PWR::new(dp.PWR, &mut rcc);
 
-    #[cfg(feature = "stm32l0x1")]
     let mut syscfg = SYSCFG::new(dp.SYSCFG, &mut rcc);
-    #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-    let mut syscfg = SYSCFG::new(dp.SYSCFG_COMP, &mut rcc);
 
     let instant = Instant::new()
         .set_year(19)