Remove useless deprecation warning on InterruptNumber ifor Nr

Author: adamgreig

src/interrupt.rs

@@ -25,10 +25,6 @@ pub unsafe trait InterruptNumber: Copy {
 
 /// Implement InterruptNumber for the old bare_metal::Nr trait.
 /// This implementation is for backwards compatibility only and will be removed in cortex-m 0.8.
-#[deprecated(
-    since = "0.7.0",
-    note = "Please update your PAC to one using the latest svd2rust"
-)]
 unsafe impl<T: Nr + Copy> InterruptNumber for T {
     #[inline]
     fn number(self) -> u16 {