[Sync] Remove LimitSyncPassphrasePrompt experiment check from PSSA.

chrome/browser/sync/profile_sync_service_android.cc

Index: chrome/browser/sync/profile_sync_service_android.cc
diff --git a/chrome/browser/sync/profile_sync_service_android.cc b/chrome/browser/sync/profile_sync_service_android.cc
index be0cb5f40c3930a15837d6c774ecd8da5ec1b0af..4e9e6348ffc259d3eb3445e09f827e3b8ccfbf12 100644
--- a/chrome/browser/sync/profile_sync_service_android.cc
+++ b/chrome/browser/sync/profile_sync_service_android.cc
@@ -12,7 +12,6 @@
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/metrics/field_trial.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
@@ -114,10 +113,6 @@ void ProfileSyncServiceAndroid::OnStateChanged() {
 
 jboolean ProfileSyncServiceAndroid::IsPassphrasePrompted(JNIEnv* env,
                                                          jobject obj) {
-  const std::string group_name =
-      base::FieldTrialList::FindFullName("LimitSyncPassphrasePrompt");
-  if (group_name != "Enabled")
-    return false;
   return sync_prefs_->IsPassphrasePrompted();
 }