Revert of Allow intelligibility to compile in apm

webrtc/modules/audio_processing/audio_processing.gypi

 # Copyright (c) 2012 The WebRTC 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 in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'variables': {
@@ skipping 81 matching lines @@
         'common.h',
         'echo_cancellation_impl.cc',
         'echo_cancellation_impl.h',
         'echo_control_mobile_impl.cc',
         'echo_control_mobile_impl.h',
         'gain_control_impl.cc',
         'gain_control_impl.h',
         'high_pass_filter_impl.cc',
         'high_pass_filter_impl.h',
         'include/audio_processing.h',
-        'intelligibility/intelligibility_enhancer.cc',
-        'intelligibility/intelligibility_enhancer.h',
-        'intelligibility/intelligibility_utils.cc',
-        'intelligibility/intelligibility_utils.h',
         'level_estimator_impl.cc',
         'level_estimator_impl.h',
         'noise_suppression_impl.cc',
         'noise_suppression_impl.h',
         'processing_component.cc',
         'processing_component.h',
         'rms_level.cc',
         'rms_level.h',
         'splitting_filter.cc',
         'splitting_filter.h',
@@ skipping 153 matching lines @@
             'cflags!': [
               '-flto',
               '-ffat-lto-objects',
             ],
           }],
         ],
       }],
     }],
   ],
 }