Fix API changes.

Author: gorzell

crates/bpe-openai/src/lib.rs

@@ -242,12 +242,12 @@ mod tests {
 
     #[test]
     fn test_cl100k() {
-        test_equivalence(cl100k_base(), &cl100k_base_singleton().lock());
+        test_equivalence(cl100k_base(), cl100k_base_singleton());
     }
 
     #[test]
     fn test_o200k() {
-        test_equivalence(o200k_base(), &o200k_base_singleton().lock());
+        test_equivalence(o200k_base(), o200k_base_singleton());
     }
 
     #[track_caller]

crates/bpe/tests/src/lib.rs

@@ -89,7 +89,6 @@ mod tests {
         .unwrap();
         let bpe = &cl100k_base().bpe;
         let encoded1 = cl100k_base_singleton()
-            .lock()
             .encode_ordinary(input)
             .into_iter()
             .collect_vec();