Remove Mojo bindings environment.

mojo/converters/blink/BUILD.gn

 # Copyright 2015 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.
 
 component("blink") {
   output_name = "mojo_blink_lib"
 
   sources = [
     "blink_input_events_type_converters.cc",
     "blink_input_events_type_converters.h",
     "mojo_blink_export.h",
   ]
 
   defines = [ "MOJO_CONVERTERS_BLINK_IMPLEMENTATION" ]
 
   deps = [
     "//base",
     "//components/mus/public/interfaces",
-    "//mojo/environment:chromium",
     "//mojo/public/c/system:for_component",
     "//third_party/WebKit/public:blink",
     "//ui/events",
   ]
 }