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

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index ed89057225a43e8c1091242f63171d2cbc6d4282..598e990e061c3b850ace5bef41278e1a878389bb 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -3446,9 +3446,7 @@
       SetExpressionPosition(expr);
       __ mov(a0, result_register());
       PopOperand(a1);
-      __ EmitLoadTypeFeedbackVector(a3);
-      __ li(a4, Operand(SlotToIndex(expr->CompareOperationFeedbackSlot())));
-      InstanceOfWithFeedbackStub stub(isolate());
+      InstanceOfStub stub(isolate());
       __ CallStub(&stub);
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ LoadRoot(a4, Heap::kTrueValueRootIndex);