blockstore: remove old duplicate proofs for rooted slots at startup

ledger/src/blockstore.rs

@@ -3864,6 +3864,8 @@ impl Blockstore {
         with_hash: bool,
     ) -> Result<()> {
         self.set_roots(slots.iter().map(|(slot, _hash)| slot))?;
+        // Remove any old duplicate proofs
+        self.remove_slot_duplicate_proofs(slots.iter().map(|(slot, _hash)| *slot))?;
         if with_hash {
             self.set_duplicate_confirmed_slots_and_hashes(
                 slots
@@ -3895,6 +3897,20 @@ impl Blockstore {
         self.duplicate_slots_cf.delete(slot)
     }
 
+    fn remove_slot_duplicate_proofs<I>(&self, slots: I) -> Result<()>
+    where
+        I: Iterator<Item = Slot>,
+    {
+        let mut write_batch = self.db.batch()?;
+
+        for slot in slots {
+            write_batch.delete::<cf::DuplicateSlots>(slot)?;
+        }
+
+        self.db.write(write_batch)?;
+        Ok(())
+    }
+
     pub fn get_first_duplicate_proof(&self) -> Option<(Slot, DuplicateSlotProof)> {
         let mut iter = self
             .db