improve tracing instruments on database::map

Signed-off-by: Jason Volk <jason@zemos.net>

src/database/map/remove.rs

@@ -25,7 +25,7 @@ pub fn adel<const MAX: usize, K>(&self, key: K)
 }
 
 #[implement(super::Map)]
-#[tracing::instrument(skip(self, buf), fields(%self), level = "trace")]
+#[tracing::instrument(skip(self, buf), level = "trace")]
 pub fn bdel<K, B>(&self, key: K, buf: &mut B)
 where
 	K: Serialize + Debug,