improve tracing instruments on database::map

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

src/database/map/rev_keys.rs

@@ -5,7 +5,6 @@ use serde::Deserialize;
 use crate::{keyval, keyval::Key, stream};
 
 #[implement(super::Map)]
-#[tracing::instrument(skip(self), fields(%self), level = "trace")]
 pub fn rev_keys<'a, K>(&'a self) -> impl Stream<Item = Result<Key<'_, K>>> + Send
 where
 	K: Deserialize<'a> + Send,