Remove unnecessary USART cfg gate

Author: teskje

src/serial.rs

@@ -446,18 +446,6 @@ macro_rules! hal {
     }
 }
 
-#[cfg(any(
-    feature = "stm32f302",
-    feature = "stm32f301",
-    feature = "stm32f318",
-    feature = "stm32f303",
-    feature = "stm32f373",
-    feature = "stm32f378",
-    feature = "stm32f328",
-    feature = "stm32f334",
-    feature = "stm32f358",
-    feature = "stm32f398"
-))]
 hal! {
     USART1: (usart1, APB2, usart1en, usart1rst, pclk2),
     USART2: (usart2, APB1, usart2en, usart2rst, pclk1),