Revert of [compiler] Properly guard the speculative optimizations for instanceof.

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index 926442e40eb79522bfd3bbda673151a1c23c37ca..68cf58905f87e1f62e0d2186409657ba29861d39 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -2826,12 +2826,9 @@
     case Token::GTE:
       op = javascript()->GreaterThanOrEqual(hint);
       break;
-    case Token::INSTANCEOF: {
-      VectorSlotPair feedback =
-          CreateVectorSlotPair(expr->CompareOperationFeedbackSlot());
-      op = javascript()->InstanceOf(feedback);
-      break;
-    }
+    case Token::INSTANCEOF:
+      op = javascript()->InstanceOf();
+      break;
     case Token::IN:
       op = javascript()->HasProperty();
       break;