[Telemetry]Do not run power.idle_platform for reference build runs

testing/buildbot/chromium.perf.fyi.json

Index: testing/buildbot/chromium.perf.fyi.json
diff --git a/testing/buildbot/chromium.perf.fyi.json b/testing/buildbot/chromium.perf.fyi.json
index b8d65ca1cdf69131811ba5c7c8e5083263e89844..1e18c5e49659c8ed9e5f63e8369f37339cebbe05 100644
--- a/testing/buildbot/chromium.perf.fyi.json
+++ b/testing/buildbot/chromium.perf.fyi.json
@@ -4813,36 +4813,6 @@
       },
       {
         "args": [
-          "power.idle_platform",
-          "-v",
-          "--upload-results",
-          "--output-format=chartjson",
-          "--browser=reference",
-          "--output-trace-tag=_ref"
-        ],
-        "isolate_name": "telemetry_perf_tests",
-        "name": "power.idle_platform.reference",
-        "override_compile_targets": [
-          "telemetry_perf_tests"
-        ],
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "dimension_sets": [
-            {
-              "android_devices": "1",
-              "id": "build245-m4--device7",
-              "os": "Android",
-              "pool": "Chrome-perf"
-            }
-          ],
-          "expiration": 36000,
-          "hard_timeout": 7200,
-          "ignore_task_failure": true,
-          "io_timeout": 3600
-        }
-      },
-      {
-        "args": [
           "power.steady_state",
           "-v",
           "--upload-results",
@@ -16540,36 +16510,6 @@
       },
       {
         "args": [
-          "power.idle_platform",
-          "-v",
-          "--upload-results",
-          "--output-format=chartjson",
-          "--browser=reference",
-          "--output-trace-tag=_ref"
-        ],
-        "isolate_name": "telemetry_perf_tests",
-        "name": "power.idle_platform.reference",
-        "override_compile_targets": [
-          "telemetry_perf_tests"
-        ],
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "dimension_sets": [
-            {
-              "gpu": "8086:22b1",
-              "id": "build141-b1",
-              "os": "Windows-10-10586",
-              "pool": "Chrome-perf"
-            }
-          ],
-          "expiration": 36000,
-          "hard_timeout": 7200,
-          "ignore_task_failure": true,
-          "io_timeout": 3600
-        }
-      },
-      {
-        "args": [
           "power.steady_state",
           "-v",
           "--upload-results",
@@ -28187,36 +28127,6 @@
       },
       {
         "args": [
-          "power.idle_platform",
-          "-v",
-          "--upload-results",
-          "--output-format=chartjson",
-          "--browser=reference",
-          "--output-trace-tag=_ref"
-        ],
-        "isolate_name": "telemetry_perf_tests",
-        "name": "power.idle_platform.reference",
-        "override_compile_targets": [
-          "telemetry_perf_tests"
-        ],
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "dimension_sets": [
-            {
-              "gpu": "1002:9874",
-              "id": "build205-b4",
-              "os": "Windows-10-10586",
-              "pool": "Chrome-perf"
-            }
-          ],
-          "expiration": 36000,
-          "hard_timeout": 7200,
-          "ignore_task_failure": true,
-          "io_timeout": 3600
-        }
-      },
-      {
-        "args": [
           "power.steady_state",
           "-v",
           "--upload-results",