impl Unborrow for &'a mut T

This plays nicer with user code that's generic over peripheral traits like `Instance` or `Pin`.

embassy-macros/src/lib.rs

@@ -216,13 +216,6 @@ pub fn interrupt_declare(item: TokenStream) -> TokenStream {
                 self
             }
         }
-
-        impl ::embassy::util::Unborrow for &mut #name_interrupt {
-            type Target = #name_interrupt;
-            unsafe fn unborrow(self) -> #name_interrupt {
-                ::core::ptr::read(self)
-            }
-        }
     };
     result.into()
 }