Revert of [complier] Enable parallel eager inner function compilation with compiler dispatcher.

test/debugger/debug/ignition/debugger-statement.js

 // 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: --ignition-filter=f
+
 var Debug = debug.Debug;
 
 var break_count = 0;
 
 function f() {
   debugger;
 }
 
 function listener(event, exec_data) {
   if (event != Debug.DebugEvent.Break) return;
   break_count++;
 }
 
 f();
 assertEquals(0, break_count);
 
 Debug.setListener(listener);
 
 f();
 assertEquals(1, break_count);
 
 Debug.setListener(null);
 
 f();
 assertEquals(1, break_count);