Remove comment

diff --git a/sparse_strips/vello_common/src/tile.rs b/sparse_strips/vello_common/src/tile.rs
index 7b5fa55..6b127b4 100644
--- a/sparse_strips/vello_common/src/tile.rs
+++ b/sparse_strips/vello_common/src/tile.rs

@@ -531,8 +531,6 @@
         );
     }
 
-    // At tile boundary
-
     #[test]
     // See https://github.com/LaurenzV/cpu-sparse-experiments/issues/46.
     fn infinite_loop() {