Remove the PrivacySandboxLocalNoticeConfirmation testing experiments

The current implementation is responsible for a regression,
in b/346597047 when removing the testing experiments, the
performance is restored, as a short term solution we
will remove these experiments in testing until we mitigate
this performance deprecation. The feature is disabled by default
and is currently only used in a study in canary.

Change-Id: Icf0b357a0cf3b7dc205d13d3cad4837191601c10
Bug: 346597047
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5629639
Reviewed-by: Abe Boujane <boujane@google.com>
Reviewed-by: Jacob Stanley <jacobstanley@google.com>
Reviewed-by: Matt Dembski <dembski@google.com>
Commit-Queue: Christine Ying <chrstne@google.com>
Cr-Commit-Position: refs/heads/main@{#1314694}
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index 56859196..4d410eb 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -16975,44 +16975,6 @@
             ]
         }
     ],
-    "PrivacySandboxLocalNoticeConfirmation": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Local_Notice_Confirmation_Disabled",
-                    "disable_features": [
-                        "PrivacySandboxLocalNoticeConfirmation"
-                    ]
-                },
-                {
-                    "name": "Default_To_OS_Country_Enabled",
-                    "params": {
-                        "default-to-os-country": "true"
-                    },
-                    "enable_features": [
-                        "PrivacySandboxLocalNoticeConfirmation"
-                    ]
-                },
-                {
-                    "name": "Default_To_OS_Country_Disabled",
-                    "params": {
-                        "default-to-os-country": "false"
-                    },
-                    "enable_features": [
-                        "PrivacySandboxLocalNoticeConfirmation"
-                    ]
-                }
-            ]
-        }
-    ],
     "PrivacySandboxProactiveTopicsBlocking": [
         {
             "platforms": [