Remove Debug constraint on SumTree (and its related traits/structs) (#18248)

Release Notes:

- N/A

Co-authored-by: Nathan <nathan@zed.dev>

crates/editor/src/selections_collection.rs

@@ -109,7 +109,7 @@ impl SelectionsCollection {
 
     pub fn all<'a, D>(&self, cx: &AppContext) -> Vec<Selection<D>>
     where
-        D: 'a + TextDimension + Ord + Sub<D, Output = D> + std::fmt::Debug,
+        D: 'a + TextDimension + Ord + Sub<D, Output = D>,
     {
         let disjoint_anchors = &self.disjoint;
         let mut disjoint =
@@ -850,7 +850,7 @@ pub(crate) fn resolve_multiple<'a, D, I>(
     snapshot: &MultiBufferSnapshot,
 ) -> impl 'a + Iterator<Item = Selection<D>>
 where
-    D: TextDimension + Ord + Sub<D, Output = D> + std::fmt::Debug,
+    D: TextDimension + Ord + Sub<D, Output = D>,
     I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
 {
     let (to_summarize, selections) = selections.into_iter().tee();