[debugger] Migrate more debugger tests to inspector

test/mjsunit/regress/regress-4320.js

Index: test/mjsunit/regress/regress-4320.js
diff --git a/test/mjsunit/regress/regress-4320.js b/test/mjsunit/regress/regress-4320.js
deleted file mode 100644
index df6a99b28fca8ea391224e0113822154c6fdfb9b..0000000000000000000000000000000000000000
--- a/test/mjsunit/regress/regress-4320.js
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2015 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 --expose-debug-as debug
-
-var Debug = debug.Debug;
-
-function f() { g(); }
-
-function g() { }
-
-f();
-f();
-%OptimizeFunctionOnNextCall(f);
-f();
-
-Debug.setListener(function() {});
-Debug.setBreakPoint(g, 0);
-
-f();