Revert of [compiler] Properly guard the speculative optimizations for instanceof.

test/mjsunit/compiler/deopt-instanceof-proxy.js

Index: test/mjsunit/compiler/deopt-instanceof-proxy.js
diff --git a/test/mjsunit/compiler/deopt-instanceof-proxy.js b/test/mjsunit/compiler/deopt-instanceof-proxy.js
deleted file mode 100644
index e9a1a98336035125a72e8b333a6901223b8e39cb..0000000000000000000000000000000000000000
--- a/test/mjsunit/compiler/deopt-instanceof-proxy.js
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --allow-natives-syntax
-
-function A() {}
-
-function foo(a) {
-  return a instanceof A;
-}
-
-var a = new A;
-var p = new Proxy(a, {});
-foo(a);
-foo(a);
-%OptimizeFunctionOnNextCall(foo);
-foo(a);
-assertOptimized(foo);
-foo(p);
-foo(p);
-%OptimizeFunctionOnNextCall(foo);
-foo(p);
-assertOptimized(foo);