CFI buildbot: remove a test not supported by GN.

testing/buildbot/chromium.fyi.json

 {
   "Android Cloud Tests": {
     "gtest_tests": [
       {
         "test": "android_webview_unittests"
       },
       {
         "test": "base_unittests"
       },
       {
@@ skipping 419 matching lines @@
       {
         "test": "mojo_public_system_unittests"
       },
       {
         "test": "mojo_public_utility_unittests"
       },
       {
         "test": "mojo_system_unittests"
       },
       {
-        "test": "nacl_helper_nonsfi_unittests"
-      },
-      {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "net_unittests"
@@ skipping 5303 matching lines @@
       {
         "args": [
           "--site-per-process",
           "--gtest_filter=-CaptivePortalTabHelperTest.HttpsSubframe*"
         ],
         "test": "unit_tests"
       }
     ]
   }
 }