[turbofan] Drop V8_TURBOFAN_BACKEND and V8_TURBOFAN_TARGET defines.

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 267c1b1adac7208b1c5a6bf9499d6ef79e2131a0..9d6cca3dbc0dac92ce539e0287fa7150db14832a 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -1004,7 +1004,6 @@ TEST_F(JSTypedLoweringTest, JSLoadDynamicContext) {
   }
 }
 
-#if V8_TURBOFAN_TARGET
 
 // -----------------------------------------------------------------------------
 // JSAdd
@@ -1104,8 +1103,6 @@ TEST_F(JSTypedLoweringTest, JSCreateLiteralObject) {
              input0, input1, input2, _, context, frame_state, effect, control));
 }
 
-#endif  // V8_TURBOFAN_TARGET
-
 
 // -----------------------------------------------------------------------------
 // JSCreateWithContext