Removing obsolete clippy allow thingy.

common/src/bitset.rs

@@ -440,7 +440,7 @@ mod tests {
         bitset.serialize(&mut out).unwrap();
 
         let bitset = ReadOnlyBitSet::open(OwnedBytes::new(out));
-        assert_eq!(bitset.len() as usize, 64 as usize);
+        assert_eq!(bitset.len() as usize, 64);
     }
 
     #[test]

ownedbytes/src/lib.rs

@@ -83,7 +83,6 @@ impl OwnedBytes {
     /// Splits the right part of the `OwnedBytes` at the given offset.
     ///
     /// `self` is truncated to `split_len`, left with the remaining bytes.
-    #[allow(clippy::return_self_not_must_use)]
     pub fn split_off(&mut self, split_len: usize) -> OwnedBytes {
         let right_box_stable_deref = self.box_stable_deref.clone();
         let right_piece = OwnedBytes {