Revert "Autofill: Add fieldtrail testing for AndroidAutofillQueryServerFieldTypes"

This reverts commit 7452904e.

Reason for revert: AwAutofillTest failures, see https://ci.chromium.org/ui/p/chromium/builders/ci/android-pie-x86-rel/3610/overview

Original change's description:
> Autofill: Add fieldtrail testing for AndroidAutofillQueryServerFieldTypes
>
> Bug: 1151542
> Change-Id: I25545f36d588ca926ce1de9514ae919f3f441a64
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2628040
> Commit-Queue: Weilun Shi <sweilun@chromium.org>
> Reviewed-by: Weilun Shi <sweilun@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#843427}

TBR=michaelbai@chromium.org,sweilun@chromium.org,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: Id31bb7d9a0b420315d729b802c6634e5e9c59e71
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1151542
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2629971Reviewed-by: Sky Malice <skym@chromium.org>
Commit-Queue: Sky Malice <skym@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843702}

testing/variations/fieldtrial_testing_config.json

@@ -112,22 +112,6 @@
             ]
         }
     ],
-    "AndroidAutofillQueryServerFieldTypes": [
-        {
-            "platforms": [
-                "android_weblayer",
-                "android_webview"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AndroidAutofillQueryServerFieldTypes"
-                    ]
-                }
-            ]
-        }
-    ],
     "AndroidDarkSearch": [
         {
             "platforms": [