[turbofan] Work towards fixing asm.js heap access.

test/unittests/compiler/simplified-operator-unittest.cc

Index: test/unittests/compiler/simplified-operator-unittest.cc
diff --git a/test/unittests/compiler/simplified-operator-unittest.cc b/test/unittests/compiler/simplified-operator-unittest.cc
index a5dad5a4154e9a4cf4c1d47c034371c8e9548eb4..e7fceba47d39cbee236f7c36821b16fa87a5b8c0 100644
--- a/test/unittests/compiler/simplified-operator-unittest.cc
+++ b/test/unittests/compiler/simplified-operator-unittest.cc
@@ -50,7 +50,6 @@ const PureOperator kPureOperators[] = {
     PURE(NumberModulus, Operator::kNoProperties, 2),
     PURE(NumberToInt32, Operator::kNoProperties, 1),
     PURE(NumberToUint32, Operator::kNoProperties, 1),
-    PURE(PlainPrimitiveToNumber, Operator::kNoProperties, 1),
     PURE(StringEqual, Operator::kCommutative, 2),
     PURE(StringLessThan, Operator::kNoProperties, 2),
     PURE(StringLessThanOrEqual, Operator::kNoProperties, 2),