Convert simple proof to ics23 proof (#6390)

* convert simple proof to ics23 proof

* add CHANGELOG entries

* Apply suggestions from code review

Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>

store/rootmulti/proof_test.go

@@ -109,36 +109,6 @@ func TestVerifyMultiStoreQueryProof(t *testing.T) {
 	require.NotNil(t, err)
 }
 
-func TestVerifyMultiStoreQueryProofEmptyStore(t *testing.T) {
-	// Create main tree for testing.
-	db := dbm.NewMemDB()
-	store := NewStore(db)
-	iavlStoreKey := types.NewKVStoreKey("iavlStoreKey")
-
-	store.MountStoreWithDB(iavlStoreKey, types.StoreTypeIAVL, nil)
-	err := store.LoadVersion(0)
-	require.NoError(t, err)
-	cid := store.Commit() // Commit with empty iavl store.
-
-	// Get Proof
-	res := store.Query(abci.RequestQuery{
-		Path:  "/iavlStoreKey/key", // required path to get key/value+proof
-		Data:  []byte("MYKEY"),
-		Prove: true,
-	})
-	require.NotNil(t, res.Proof)
-
-	// Verify proof.
-	prt := DefaultProofRuntime()
-	err = prt.VerifyAbsence(res.Proof, cid.Hash, "/iavlStoreKey/MYKEY")
-	require.Nil(t, err)
-
-	// Verify (bad) proof.
-	prt = DefaultProofRuntime()
-	err = prt.VerifyValue(res.Proof, cid.Hash, "/iavlStoreKey/MYKEY", []byte("MYVALUE"))
-	require.NotNil(t, err)
-}
-
 func TestVerifyMultiStoreQueryProofAbsence(t *testing.T) {
 	// Create main tree for testing.
 	db := dbm.NewMemDB()