Remove TranslateServerStudy.

The study and params were added here:
https://codereview.chromium.org/2108053004.

Bug: 1126640
Change-Id: Ib73c71702e6fb5c0cc151ddddc20b4788e4c17d8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427073
Commit-Queue: Caitlin Fischer <caitlinfischer@google.com>
Reviewed-by: Frank Tang <ftang@chromium.org>
Reviewed-by: anthonyvd <anthonyvd@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813757}

components/translate/core/browser/translate_script.cc

@@ -48,8 +48,6 @@ const char TranslateScript::kCssLoaderCallbackQueryValue[] =
 const char TranslateScript::kJavascriptLoaderCallbackQueryName[] = "jlc";
 const char TranslateScript::kJavascriptLoaderCallbackQueryValue[] =
     "cr.googleTranslate.onLoadJavascript";
-const char kTranslateServerStudy[] = "TranslateServerStudy";
-const char kServerParams[] = "server_params";
 
 TranslateScript::TranslateScript()
     : expiration_delay_(base::TimeDelta::FromDays(kExpirationDelayDays)) {}
@@ -132,9 +130,6 @@ void TranslateScript::OnScriptFetchComplete(bool success,
     // server.
     std::string server_params;
     std::map<std::string, std::string> params;
-    if (variations::GetVariationParams(kTranslateServerStudy, &params)) {
-      server_params = params[kServerParams];
-    }
     base::StringAppendF(
         &data_, "var gtTimeInfo = {'fetchStart': %0.f, 'fetchEnd': %0.f};\n",
         script_fetch_start_time_, base::Time::Now().ToJsTime());

testing/variations/fieldtrial_testing_config.json

@@ -6919,27 +6919,6 @@
             ]
         }
     ],
-    "TranslateServerStudy": [
-        {
-            "platforms": [
-                "android",
-                "android_weblayer",
-                "chromeos",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "SmartRendering",
-                    "params": {
-                        "server_params": "smrd"
-                    }
-                }
-            ]
-        }
-    ],
     "TrustTokenOriginTrial": [
         {
             "platforms": [