Remove `Shape::update`

It is no longer being used.

crates/fj-kernel/src/shape/api.rs

@@ -4,7 +4,7 @@ use crate::objects::{Curve, Cycle, Edge, Face, Surface, Vertex};
 
 use super::{
     stores::{Store, Stores},
-    Handle, Iter, Object, Update,
+    Handle, Iter, Object,
 };
 
 /// The boundary representation of a shape
@@ -144,14 +144,6 @@ impl Shape {
         }
     }
 
-    /// Update objects in the shape
-    ///
-    /// Returns [`Update`], and API that can be used to update objects in the
-    /// shape.
-    pub fn update(&mut self) -> Update {
-        Update::new(&mut self.stores)
-    }
-
     /// Access an iterator over all curves
     ///
     /// The caller must not make any assumptions about the order of curves.

crates/fj-kernel/src/shape/update.rs

@@ -8,10 +8,6 @@ pub struct Update<'r> {
 }
 
 impl<'r> Update<'r> {
-    pub(super) fn new(stores: &'r mut Stores) -> Self {
-        Self { stores }
-    }
-
     /// Update all objects of a specific type
     pub fn update_all<T: Object>(self, f: impl FnMut(&mut T)) -> Self {
         self.stores.get::<T>().update(f);