Enable DRP config service by default

testing/variations/fieldtrial_testing_config_android.json

 {
     "AndroidSessionNotifications": [
         {
             "group_name": "Disabled"
         }
     ],
     "AsyncDns": [
         {
             "group_name": "AsyncDnsA"
         },
@@ skipping 74 matching lines @@
                 "hysteresis_period_seconds": "120",
                 "rtt_msec": "2000"
             }
         }
     ],
     "DataCompressionProxyPromoVisibility": [
         {
             "group_name": "Enabled"
         }
     ],
-    "DataReductionProxyConfigService": [
-        {
-            "group_name": "Enabled",
-            "params": {
-                "minimum_refresh_interval_on_success_msec": "21600000"
-            }
-        }
-    ],
     "DataReductionProxyFREPromo": [
         {
             "group_name": "Enabled"
         }
     ],
     "DataReductionProxyUseQuic": [
         {
             "group_name": "Enabled"
         }
     ],
@@ skipping 345 matching lines @@
     ],
     "use-new-media-cache": [
         {
             "enable_features": [
                 "use-new-media-cache"
             ],
             "group_name": "Enabled"
         }
     ]
 }