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

mojo/edk/test/BUILD.gn

Index: mojo/edk/test/BUILD.gn
diff --git a/mojo/edk/test/BUILD.gn b/mojo/edk/test/BUILD.gn
index 171d0875b50da85d33012f2abc1b407b9a8101ba..791d62c00b6a37c69ec45b28d8b6ec1d830f6b94 100644
--- a/mojo/edk/test/BUILD.gn
+++ b/mojo/edk/test/BUILD.gn
@@ -94,7 +94,6 @@ group("public_tests") {
     ":mojo_public_bindings_unittests",
     ":mojo_public_system_perftests",
     ":mojo_public_system_unittests",
-    ":mojo_public_utility_unittests",
   ]
 }
 
@@ -127,10 +126,3 @@ test("mojo_public_system_unittests") {
     "//mojo/public/cpp/system/tests",
   ]
 }
-
-test("mojo_public_utility_unittests") {
-  deps = [
-    ":run_all_unittests",
-    "//mojo/public/cpp/utility/tests",
-  ]
-}