Remove deprecated cursor event filter for Ozone

ash/ash.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
     # These files lists are shared with the GN build.
     'ash_sources': [
@@ skipping 71 matching lines @@
       'display/display_layout_store.cc',
       'display/display_manager.cc',
       'display/display_manager.h',
       'display/display_pref_util.h',
       'display/event_transformation_handler.cc',
       'display/event_transformation_handler.h',
       'display/mirror_window_controller.cc',
       'display/mirror_window_controller.h',
       'display/mouse_cursor_event_filter.cc',
       'display/mouse_cursor_event_filter.h',
-      'display/mouse_cursor_event_filter_ozone.cc',
       'display/projecting_observer_chromeos.cc',
       'display/projecting_observer_chromeos.h',
       'display/resolution_notification_controller.cc',
       'display/resolution_notification_controller.h',
       'display/root_window_transformers.cc',
       'display/root_window_transformers.h',
       'display/screen_ash.cc',
       'display/screen_ash.h',
       'display/screen_position_controller.cc',
       'display/screen_position_controller.h',
@@ skipping 1166 matching lines @@
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '../ui/display/display.gyp:display',
           ],
         }],
       ],
     },
   ],
 }