[turbofan] Remove usage of Unique<T> from graph.

src/compiler/simplified-operator-reducer.cc

Index: src/compiler/simplified-operator-reducer.cc
diff --git a/src/compiler/simplified-operator-reducer.cc b/src/compiler/simplified-operator-reducer.cc
index 2e87f362e7c67b2cf3fd56693885fee5d9cb92b9..e8e579202431c05b5c383199e86d0b11b39a3e21 100644
--- a/src/compiler/simplified-operator-reducer.cc
+++ b/src/compiler/simplified-operator-reducer.cc
@@ -25,8 +25,7 @@ Reduction SimplifiedOperatorReducer::Reduce(Node* node) {
     case IrOpcode::kBooleanNot: {
       HeapObjectMatcher m(node->InputAt(0));
       if (m.HasValue()) {
-        return Replace(
-            jsgraph()->BooleanConstant(!m.Value().handle()->BooleanValue()));
+        return Replace(jsgraph()->BooleanConstant(!m.Value()->BooleanValue()));
       }
       if (m.IsBooleanNot()) return Replace(m.InputAt(0));
       break;
@@ -40,7 +39,7 @@ Reduction SimplifiedOperatorReducer::Reduce(Node* node) {
     }
     case IrOpcode::kChangeBoolToBit: {
       HeapObjectMatcher m(node->InputAt(0));
-      if (m.HasValue()) return ReplaceInt32(m.Value().handle()->BooleanValue());
+      if (m.HasValue()) return ReplaceInt32(m.Value()->BooleanValue());
       if (m.IsChangeBitToBool()) return Replace(m.InputAt(0));
       break;
     }