Remove the //ios/public/test target.

ios/public/test/BUILD.gn

Index: ios/public/test/BUILD.gn
diff --git a/ios/public/test/BUILD.gn b/ios/public/test/BUILD.gn
deleted file mode 100644
index 426db7c90e95f7e41c25156822fefa65f2b9e3ba..0000000000000000000000000000000000000000
--- a/ios/public/test/BUILD.gn
+++ /dev/null
@@ -1,26 +0,0 @@
-# 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.
-
-source_set("test") {
-  testonly = true
-  sources = [
-    "fake_sync_service_factory.cc",
-    "fake_sync_service_factory.h",
-    "test_chrome_browser_provider.h",
-    "test_chrome_browser_provider.mm",
-    "test_chrome_provider_initializer.cc",
-    "test_chrome_provider_initializer.h",
-    "test_updatable_resource_provider.h",
-    "test_updatable_resource_provider.mm",
-  ]
-
-  deps = [
-    "//base",
-    "//components/keyed_service/core",
-    "//components/keyed_service/ios",
-    "//ios/public/provider/chrome/browser",
-    "//sync",
-    "//testing/gtest",
-  ]
-}