Revert of Enable telemetry_unittests on chromium.android:Marshmallow 64-bit Tester

testing/buildbot/chromium.android.json

 {
   "Android Cronet Builder": {
     "additional_compile_targets": [
       "cronet_package"
     ]
   },
   "Android N5X Swarm Builder": {
     "gtest_tests": [
       {
         "override_compile_targets": [
@@ skipping 3789 matching lines @@
                 "https://luci-logdog.appspot.com/v/?s",
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
         },
         "test": "vr_shell_unittests"
       }
-    ],
-    "isolated_scripts": [
-      {
-        "args": [
-          "--browser=android-chromium",
-          "--device=android"
-        ],
-        "isolate_name": "telemetry_unittests",
-        "name": "telemetry_unittests",
-        "override_compile_targets": [
-          "telemetry_unittests_run"
-        ],
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "dimension_sets": [
-            {
-              "android_devices": "6",
-              "device_os": "MMB29Q",
-              "device_type": "bullhead"
-            }
-          ],
-          "hard_timeout": 960,
-          "shards": 1
-        }
-      }
     ]
   },
   "Marshmallow Tablet Tester": {
     "gtest_tests": [
       {
         "test": "android_webview_unittests"
       },
       {
         "test": "base_unittests"
       },
@@ skipping 88 matching lines @@
       },
       {
         "test": "chrome_sync_shell_test_apk"
       },
       {
         "test": "content_shell_test_apk"
       }
     ]
   }
 }