[Status Chip] Removing fieldtrial testing config

Remove this for now since it is not launched
anywhere but breaks newly added browser-tests.

Bug: 932818
Change-Id: Ic28350544eab1afb03862b650b09bb60cb829e3b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1855205Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Siyu An <siyua@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705188}

testing/variations/fieldtrial_testing_config.json

@@ -766,24 +766,6 @@
             ]
         }
     ],
-    "AutofillEnableToolbarStatusChip": [
-        {
-            "platforms": [
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AutofillCreditCardUploadFeedback",
-                        "AutofillEnableToolbarStatusChip"
-                    ]
-                }
-            ]
-        }
-    ],
     "AutofillFieldMetadata": [
         {
             "platforms": [