Remove the AutofillOffNoServerData experiment from the fieldtrial_testing_config.json

This experiment did not provide data indicating that we want to launch it, so
let's make sure that it does no remain as an active experiemnt in
fieldtrial_testing_config.json.

Bug: 966406
Change-Id: I70a46f6234137fdfe696b738f3fa3b7b109b1a51
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1807324
Commit-Queue: Brian White <bcwhite@chromium.org>
Auto-Submit: Dominic Battré <battre@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697686}

testing/variations/fieldtrial_testing_config.json

@@ -920,27 +920,6 @@
             ]
         }
     ],
-    "AutofillOffNoServerData": [
-        {
-            "platforms": [
-                "android",
-                "android_webview",
-                "chromeos",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AutofillOffNoServerData"
-                    ]
-                }
-            ]
-        }
-    ],
     "AutofillProfileValidation": [
         {
             "platforms": [