Remove type converters for ui::Event.

ui/events/mojo/BUILD.gn

 # Copyright 2014 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.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 
-# GYP version: mojo/mojo_converters.gypi:mojo_input_events_lib
-component("mojo") {
-  output_name = "input_events"
-  sources = [
-    "input_events_type_converters.cc",
-    "mojo_extended_key_event_data.cc",
-    "mojo_extended_key_event_data.h",
-    "mojo_input_events_export.h",
-  ]
-
-  defines = [ "MOJO_INPUT_EVENTS_IMPLEMENTATION" ]
-
-  deps = [
-    "//base",
-    "//components/mus/public/interfaces",
-    "//mojo/public/c/system:for_component",
-    "//ui/events",
-    "//ui/events:dom_keycode_converter",
-    "//ui/gfx/geometry",
-    "//ui/gfx/geometry/mojo",
-  ]
-}
-
 mojom("interfaces") {
   sources = [
     "latency_info.mojom",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
     "//ui/gfx/geometry/mojo",
   ]
 }
 
 mojom("test_interfaces") {
   testonly = true
   sources = [
     "traits_test_service.mojom",
   ]
 
   public_deps = [
     ":interfaces",
   ]
 }