[ios] Removed deprecated ios/web/test/web_test.h.

ios/web/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.
 
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 source_set("web") {
   deps = [
@@ skipping 352 matching lines @@
     "public/test/web_test_with_web_state.h",
     "public/test/web_test_with_web_state.mm",
     "test/crw_fake_web_controller_observer.h",
     "test/crw_fake_web_controller_observer.mm",
     "test/test_url_constants.cc",
     "test/test_url_constants.h",
     "test/test_web_thread.cc",
     "test/test_web_thread_bundle.cc",
     "test/web_int_test.h",
     "test/web_int_test.mm",
-    "test/web_test.h",
     "test/web_test_suite.h",
     "test/web_test_suite.mm",
     "test/web_test_with_web_controller.h",
     "test/web_test_with_web_controller.mm",
     "test/wk_web_view_crash_utils.h",
     "test/wk_web_view_crash_utils.mm",
   ]
 }
 
 source_set("run_all_unittests") {
@@ skipping 167 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }