Revert "[translate] Add translate ranker model loader."

ios/chrome/browser/translate/translate_ranker_metrics_provider.h

Index: ios/chrome/browser/translate/translate_ranker_metrics_provider.h
diff --git a/ios/chrome/browser/translate/translate_ranker_metrics_provider.h b/ios/chrome/browser/translate/translate_ranker_metrics_provider.h
deleted file mode 100644
index f4c670337532347ad40fd56821a733147e0d61c0..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/translate/translate_ranker_metrics_provider.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef IOS_CHROME_BROWSER_TRANSLATE_TRANSLATE_RANKER_METRICS_PROVIDER_H_
-#define IOS_CHROME_BROWSER_TRANSLATE_TRANSLATE_RANKER_METRICS_PROVIDER_H_
-
-#include "components/metrics/metrics_provider.h"
-
-namespace translate {
-
-// Provides metrics related to the translate ranker.
-class TranslateRankerMetricsProvider : public metrics::MetricsProvider {
- public:
-  TranslateRankerMetricsProvider() {}
-  ~TranslateRankerMetricsProvider() override {}
-
- private:
-  // From metrics::MetricsProvider...
-  void ProvideGeneralMetrics(
-      metrics::ChromeUserMetricsExtension* uma_proto) override;
-
-  DISALLOW_COPY_AND_ASSIGN(TranslateRankerMetricsProvider);
-};
-
-}  // namespace translate
-
-#endif  // IOS_CHROME_BROWSER_TRANSLATE_TRANSLATE_RANKER_METRICS_PROVIDER_H_