Revert "Add DoubleTestOp instruction"

runtime/vm/intermediate_language_dbc.cc

Index: runtime/vm/intermediate_language_dbc.cc
diff --git a/runtime/vm/intermediate_language_dbc.cc b/runtime/vm/intermediate_language_dbc.cc
index 26c8fec359560d12b6cbba63a99664059b5ff225..6bde28b910a1b0ca8d07a48d90e3fa2d30d87db5 100644
--- a/runtime/vm/intermediate_language_dbc.cc
+++ b/runtime/vm/intermediate_language_dbc.cc
@@ -1649,23 +1649,6 @@ EMIT_NATIVE_CODE(BinaryDoubleOp, 2, Location::RequiresRegister()) {
 }
 
 
-EMIT_NATIVE_CODE(DoubleTestOp, 1, Location::RequiresRegister()) {
-  ASSERT(compiler->is_optimizing());
-  const Register value = locs()->in(0).reg();
-  const Register result = locs()->out(0).reg();
-  switch (op_kind()) {
-    case MethodRecognizer::kDouble_getIsNaN:
-      __ DoubleIsNaN(result, value);
-      break;
-    case MethodRecognizer::kDouble_getIsInfinite:
-      __ DoubleIsInfinite(result, value);
-      break;
-    default:
-      UNREACHABLE();
-  }
-}
-
-
 EMIT_NATIVE_CODE(UnaryDoubleOp, 1, Location::RequiresRegister()) {
   const Register value = locs()->in(0).reg();
   const Register result = locs()->out(0).reg();