fix test that was accidently modified

Author: NathanSWard

crates/bevy_ecs/src/system/exclusive_system.rs

@@ -131,8 +131,7 @@ mod tests {
         ) {
             for entity in query.iter() {
                 *counter += 1;
-                commands.entity(entity);
-                //commands.entity(entity).remove::<f32>();
+                commands.entity(entity).remove::<f32>();
             }
         }