--- a/rust/hwphysics/src/grid.rs	Thu Jul 25 21:59:20 2019 +0300
+++ b/rust/hwphysics/src/grid.rs	Thu Jul 25 22:31:24 2019 +0300
@@ -71,6 +71,8 @@
         bin.dynamic_entries.push(*bounds);
     }
 
+    pub fn remove(&mut self, gear_id: GearId) {}
+
     pub fn update_position(
         &mut self,
         gear_id: GearId,