Remove FtpProtocol entry from the testing config.

Bug: 1126640, 333943, 1166283
Change-Id: I48bb8258bebcb35f6ae4cfcb1f644a2b4021e97f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2625892
Commit-Queue: Caitlin Fischer <caitlinfischer@google.com>
Reviewed-by: Asanka Herath <asanka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843177}

testing/variations/fieldtrial_testing_config.json

@@ -2384,27 +2384,6 @@
             ]
         }
     ],
-    "DeprecateFtp": [
-        {
-            "platforms": [
-                "windows",
-                "mac",
-                "chromeos",
-                "linux",
-                "android",
-                "android_weblayer",
-                "android_webview"
-            ],
-            "experiments": [
-                {
-                    "name": "WithoutFtpSupport",
-                    "disable_features": [
-                        "FtpProtocol"
-                    ]
-                }
-            ]
-        }
-    ],
     "DesktopHats": [
         {
             "platforms": [