[Autofill] Remove StrikeDatabaseV2 from FieldTrial

Removed StrikeDatabaseV2 from FieldTrial Configs.

Bug: 884817
Change-Id: I3e99b64f1457d97a43b10299a2de41b0869f47a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1632600Reviewed-by: Jared Saul <jsaul@google.com>
Reviewed-by: Robert Kaplow (slow) <rkaplow@chromium.org>
Commit-Queue: Anne Lim <annelim@google.com>
Cr-Commit-Position: refs/heads/master@{#665002}

testing/variations/fieldtrial_testing_config.json

@@ -937,26 +937,6 @@
             ]
         }
     ],
-    "AutofillSaveCreditCardUsesStrikeSystemV2": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AutofillSaveCreditCardUsesStrikeSystemV2"
-                    ]
-                }
-            ]
-        }
-    ],
     "AutofillSmallFormSupport": [
         {
             "platforms": [