Fix usage of Vec::extract_if: remove invalid RangeFull argument

[pesho-ivanov]

Fixes the following compilation error:

cargo test
[...]
error[E0277]: expected a FnMut(&mut T) closure, found RangeFull
--> astarpa/src/bucket_queue.rs:220:17
|
220 | ... self.tip_queue.layers[f].extract_if(.., |data| O::from_t(data) <= self.tip_start)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected an FnMut(&mut T) closure, found RangeFull
[...]