[scheduler] Update finch testing config

testing/variations/fieldtrial_testing_config.json

 {
     "AlternateComponentUrls": [
         {
             "platforms": [
                 "android",
                 "chromeos",
                 "ios",
                 "linux",
                 "mac",
                 "win"
@@ skipping 830 matching lines @@
                 "mac",
                 "win"
             ],
             "experiments": [
                 {
                     "name": "Enabled_30sMaxThrottilingDelay",
                     "params": {
                         "cpu_budget": "0.01",
                         "initial_budget": "1.0",
                         "max_budget": "3.0",
-                        "max_delay": "30.0"
+                        "max_delay": "-1"
                     },
                     "enable_features": [
                         "ExpensiveBackgroundTimerThrottling"
                     ]
                 }
             ]
         }
     ],
     "ExtensionContentVerification": [
         {
@@ skipping 2112 matching lines @@
                 {
                     "name": "Enabled",
                     "enable_features": [
                         "use-new-media-cache"
                     ]
                 }
             ]
         }
     ]
 }