Mojo C++ bindings: remove the utility/ folder.

testing/buildbot/chromium.win.json

 {
   "Win 7 Tests x64 (1)": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "accessibility_unittests"
       },
       {
@@ skipping 235 matching lines @@
         },
         "test": "mojo_public_bindings_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "mojo_public_system_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "mojo_public_utility_unittests"
-      },
-      {
         "test": "mojo_system_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
@@ skipping 380 matching lines @@
         },
         "test": "mojo_public_bindings_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "mojo_public_system_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "mojo_public_utility_unittests"
-      },
-      {
         "test": "mojo_system_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
@@ skipping 424 matching lines @@
         },
         "test": "mojo_public_bindings_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "mojo_public_system_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "mojo_public_utility_unittests"
-      },
-      {
         "test": "mojo_system_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
@@ skipping 352 matching lines @@
         },
         "test": "mojo_public_bindings_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "mojo_public_system_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "mojo_public_utility_unittests"
-      },
-      {
         "test": "mojo_system_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
@@ skipping 218 matching lines @@
       {
         "test": "mojo_public_application_unittests"
       },
       {
         "test": "mojo_public_bindings_unittests"
       },
       {
         "test": "mojo_public_system_unittests"
       },
       {
-        "test": "mojo_public_utility_unittests"
-      },
-      {
         "test": "mojo_runner_host_unittests"
       },
       {
         "test": "mojo_shell_unittests"
       },
       {
         "test": "mojo_surfaces_lib_unittests"
       },
       {
         "test": "mojo_system_unittests"
@@ skipping 28 matching lines @@
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "events_unittests"
       }
     ]
   }
 }