[#1621] pilorama: Remove Timestamp field from nodeInfo

It is already present in `Meta`.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>

pkg/local_object_storage/pilorama/forest_test.go

@@ -859,7 +859,7 @@ func testTreeGetByPath(t *testing.T, s Forest) {
 		single := mf.treeMap[cid.String()+"/"+treeID]
 		t.Run("test meta", func(t *testing.T) {
 			for i := 0; i < 6; i++ {
-				require.Equal(t, uint64(i), single.infoMap[Node(i+1)].Timestamp)
+				require.Equal(t, uint64(i), single.infoMap[Node(i+1)].Meta.Time)
 			}
 		})
 	}

pkg/local_object_storage/pilorama/inmemory.go

@@ -2,9 +2,8 @@ package pilorama
 
 // nodeInfo couples parent and metadata.
 type nodeInfo struct {
-	Parent    Node
+	Parent Node
-	Meta      Meta
+	Meta   Meta
-	Timestamp Timestamp
 }
 
 // state represents state being replicated.
@@ -98,7 +97,7 @@ func (s *state) do(op *Move) LogMove {
 	}
 
 	if !ok {
-		p.Timestamp = op.Time
+		p.Meta.Time = op.Time
 	} else {
 		s.removeChild(op.Child, p.Parent)
 	}
@@ -206,7 +205,7 @@ func (t tree) get(attr string, path []string, latest bool) []Node {
 		fileName := string(info.Meta.GetAttr(attr))
 		if fileName == path[len(path)-1] {
 			if latest {
-				if info.Timestamp >= lastTs {
+				if info.Meta.Time >= lastTs {
 					nodes = append(nodes[:0], children[i])
 				}
 			} else {