Revert of [turbofan] Use PlainPrimitiveToNumber whenever possible.

test/unittests/compiler/js-typed-lowering-unittest.cc

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index 53f41ea395ff9bfba212d89249c618cfde6c1417..97ff106329770269274b74bfeef435ed7e63e0a3 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -372,7 +372,8 @@
   Reduction r = Reduce(graph()->NewNode(javascript()->ToNumber(), input,
                                         context, effect, control));
   ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(r.replacement(), IsPlainPrimitiveToNumber(input));
+  EXPECT_THAT(r.replacement(), IsToNumber(input, IsNumberConstant(BitEq(0.0)),
+                                          graph()->start(), control));
 }