Remove empty doc comment

Test: m libbufferstreams-internal_test
Bug: 333887339
Change-Id: I161f73a836e5e0daf7dd70c62ee4cc00e4809e3a
Merged-In: I16c93f1f350eb94139045ee1aec7c6af690a3653
diff --git a/libs/bufferstreams/rust/src/publishers/buffer_pool_publisher.rs b/libs/bufferstreams/rust/src/publishers/buffer_pool_publisher.rs
index 846105d..c5c1fd3 100644
--- a/libs/bufferstreams/rust/src/publishers/buffer_pool_publisher.rs
+++ b/libs/bufferstreams/rust/src/publishers/buffer_pool_publisher.rs
@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//!
-
 use std::time::Instant;
 
 use crate::{