It's a no-op. The ctor for RollingBloomFilter already calls reset().
This concludes backport of [[https://github.com/bitcoin/bitcoin/pull/21424 | core#21424]]
https://github.com/bitcoin/bitcoin/pull/21424/commits/55966e0cc03f0e380d21a9434b048d4d515b6729
Depends on D13303