Remove any pruned block & undo files that are still on disk. This could happen on some systems if the file was still being read while unlinked, or if we crash before unlinking.
Declared in <node/blockstorage.h>
[[requires_capability(0x7f2e1b098f18), requires_capability(0x7f2e26d1a678), requires_capability(0x7f2e375e0758), requires_capability(0x7f2e33367b18), requires_capability(0x7f2e3542eb08), requires_capability(0x7f2e28a73668)]]
void
ScanAndUnlinkAlreadyPrunedFiles();