Disable test case for turbofan unsupported platform.

  Test case LowerAnyToBoolean_tagged_tagged invokes "Linkage::GetStubCallDescriptor(...)"
  function but this function is not implemented on turbofan unsupported platform.

BUG=

Review URL: https://codereview.chromium.org/836973002

Cr-Commit-Position: refs/heads/master@{#25960}

test/cctest/compiler/test-simplified-lowering.cc

@@ -812,6 +812,8 @@ TEST(LowerAnyToBoolean_bit_bit) {
 }
 
 
+#if V8_TURBOFAN_TARGET
+
 TEST(LowerAnyToBoolean_tagged_tagged) {
   // AnyToBoolean(x: kRepTagged) used as kRepTagged
   TestingGraph t(Type::Any());
@@ -826,6 +828,8 @@ TEST(LowerAnyToBoolean_tagged_tagged) {
   CHECK_EQ(t.jsgraph.NoContextConstant(), cnv->InputAt(2));
 }
 
+#endif
+
 
 TEST(LowerBooleanNot_bit_bit) {
   // BooleanNot(x: kRepBit) used as kRepBit