Remove (almost all of) //sky/engine/web

sky/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.
 
 group("sky") {
   testonly = true
 
   deps = [
     "//services/debugger",
     "//sky/engine/platform:platform_unittests",
-    "//sky/engine/web:sky_unittests",
     "//sky/engine/wtf:unittests",
     "//sky/sdk/example",
     "//sky/tools/imagediff",
     "//sky/tools/packager($host_toolchain)",
     "//sky/tools/tester",
     "//sky/viewer",
     ":sky_apk",
   ]
 
   if (!is_android) {
@@ skipping 12 matching lines @@
     deps += [
       "//sky/apk/demo",
       "//sky/services/intents",
     ]
   }
 
   if (is_linux) {
     deps += [ "//sky/shell" ]
   }
 }