yeast: Remove dead Captures methods

`Captures::map_captures`, `Captures::map_captures_to`, and
`Captures::try_map_all_captures` had no callers. The last one was
subsumed by `try_map_captures_except` (which takes a skip list and
degenerates to the old behaviour when the list is empty).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: tausbn

shared/yeast/src/captures.rs

@@ -54,37 +54,15 @@ impl Captures {
         self.captures.entry(key).or_default().push(id);
     }
 
-    pub fn map_captures(&mut self, kind: &str, f: &mut impl FnMut(Id) -> Id) {
-        if let Some(ids) = self.captures.get_mut(kind) {
-            for id in ids {
-                *id = f(*id);
-            }
-        }
-    }
-
-    /// Apply a fallible function to every captured id (across all keys),
-    /// replacing each id with the results. A function returning an empty
-    /// vector removes the capture; returning multiple ids splices them
-    /// into the capture's value list (suitable for `*`/`+` captures).
-    /// Stops and returns the error on the first failure.
-    pub fn try_map_all_captures<E>(
-        &mut self,
-        mut f: impl FnMut(Id) -> Result<Vec<Id>, E>,
-    ) -> Result<(), E> {
-        for ids in self.captures.values_mut() {
-            let mut new_ids = Vec::with_capacity(ids.len());
-            for &id in ids.iter() {
-                new_ids.extend(f(id)?);
-            }
-            *ids = new_ids;
-        }
-        Ok(())
-    }
-
-    /// Like [`try_map_all_captures`] but leaves captures whose name appears
-    /// in `skip` untouched. Used by the `rule!` macro to support `@@name`
-    /// (raw) captures alongside the default auto-translated `@name`
-    /// captures.
+    /// Apply a fallible function to every captured id, replacing each id
+    /// with the results. A function returning an empty vector removes
+    /// the capture; returning multiple ids splices them into the
+    /// capture's value list (suitable for `*`/`+` captures). Captures
+    /// whose name appears in `skip` are left untouched. Stops and
+    /// returns the error on the first failure.
+    ///
+    /// Used by the `rule!` macro's auto-translate prefix to translate
+    /// every capture except those marked `@@name` (raw).
     pub fn try_map_captures_except<E>(
         &mut self,
         skip: &[&str],
@@ -102,12 +80,6 @@ impl Captures {
         }
         Ok(())
     }
-    pub fn map_captures_to(&mut self, from: &str, to: &'static str, f: &mut impl FnMut(Id) -> Id) {
-        if let Some(from_ids) = self.captures.get(from) {
-            let new_values = from_ids.iter().copied().map(f).collect();
-            self.captures.insert(to, new_values);
-        }
-    }
 
     pub fn merge(&mut self, other: &Captures) {
         for (key, ids) in &other.captures {