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diff --git a/tools/thirdparty/OpenFst/fst/lib/random-weight.h b/tools/thirdparty/OpenFst/fst/lib/random-weight.h
deleted file mode 100644
index f7834e9..0000000
--- a/tools/thirdparty/OpenFst/fst/lib/random-weight.h
+++ /dev/null
@@ -1,164 +0,0 @@
-// random-weight.h
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-//
-// \file
-// Function objects to generate random weights in various semirings
-// for testing purposes.
-
-#ifndef FST_LIB_RANDOM_WEIGHT_H__
-#define FST_LIB_RANDOM_WEIGHT_H__
-
-#include <cstdlib>
-#include <ctime>
-
-#include "fst/lib/float-weight.h"
-#include "fst/lib/product-weight.h"
-#include "fst/lib/string-weight.h"
-
-namespace fst {
-
-// The boolean 'allow_zero' below determines whether Zero() and zero
-// divisors should be returned in the random weight generation.
-
-// This function object returns TropicalWeights that are random integers
-// chosen from [0, kNumRandomWeights).
-class TropicalWeightGenerator {
- public:
-  typedef TropicalWeight Weight;
-
-  TropicalWeightGenerator(int seed = time(0), bool allow_zero = true)
-      : allow_zero_(allow_zero) {
-    srand(seed);
-  }
-
-  Weight operator() () const {
-    int n = rand() % (kNumRandomWeights + allow_zero_);
-    if (allow_zero_ && n == kNumRandomWeights)
-      return Weight::Zero();
-
-    return Weight(static_cast<float>(n));
-  }
-
- private:
-  // The number of alternative random weights.
-  static const int kNumRandomWeights = 5;
-
-  bool allow_zero_;  // permit Zero() and zero divisors
-};
-
-
-// This function object returns LogWeights that are random integers
-// chosen from [0, kNumRandomWeights).
-class LogWeightGenerator {
- public:
-  typedef LogWeight Weight;
-
-  LogWeightGenerator(int seed = time(0), bool allow_zero = true)
-      : allow_zero_(allow_zero) {
-    srand(seed);
-  }
-
-  Weight operator() () const {
-    int n = rand() % (kNumRandomWeights + allow_zero_);
-    if (allow_zero_ && n == kNumRandomWeights)
-      return Weight::Zero();
-
-    return Weight(static_cast<float>(n));
-  }
-
- private:
-  // Number of alternative random weights.
-  static const int kNumRandomWeights = 5;
-
-  bool allow_zero_;  // permit Zero() and zero divisors
-};
-
-
-// This function object returns StringWeights that are random integer
-// strings chosen from {1,...,kAlphabetSize}^{0,kMaxStringLength} U { Zero }
-template <typename L, StringType S = STRING_LEFT>
-class StringWeightGenerator {
- public:
-  typedef StringWeight<L, S> Weight;
-
-  StringWeightGenerator(int seed = time(0), bool allow_zero = true)
-      : allow_zero_(allow_zero) {
-     srand(seed);
-  }
-
-  Weight operator() () const {
-    int n = rand() % (kMaxStringLength + allow_zero_);
-    if (allow_zero_ && n == kMaxStringLength)
-      return Weight::Zero();
-
-    vector<L> v;
-    for (int i = 0; i < n; ++i)
-      v.push_back(rand() % kAlphabetSize + 1);
-    return Weight(v.begin(), v.end());
-  }
-
- private:
-  // Alphabet size for random weights.
-  static const int kAlphabetSize = 5;
-  // Number of alternative random weights.
-  static const int kMaxStringLength = 5;
-
-  bool allow_zero_;  // permit Zero() and zero divisors
-};
-
-
-// This function object returns a weight generator over the product of the
-// weights for the generators G1 and G2.
-template <class G1, class G2>
-class ProductWeightGenerator {
- public:
-  typedef typename G1::Weight W1;
-  typedef typename G2::Weight W2;
-  typedef ProductWeight<W1, W2> Weight;
-
-  ProductWeightGenerator(int seed = time(0), bool allow_zero = true)
-      : generator1_(seed, allow_zero), generator2_(seed, allow_zero) {}
-
-  Weight operator() () const {
-    W1 w1 = generator1_();
-    W2 w2 = generator2_();
-    return Weight(w1, w2);
-  }
-
- private:
-  G1 generator1_;
-  G2 generator2_;
-};
-
-// Product generator of a string weight generator and an
-// arbitrary weight generator.
-template <class L, class G, StringType S = STRING_LEFT>
-class GallicWeightGenerator
-    : public ProductWeightGenerator<StringWeightGenerator<L, S>, G> {
-
- public:
-  typedef ProductWeightGenerator<StringWeightGenerator<L, S>, G> PG;
-  typedef typename G::Weight W;
-  typedef GallicWeight<L, W, S> Weight;
-
-  GallicWeightGenerator(int seed = time(0), bool allow_zero = true)
-      : PG(seed, allow_zero) {}
-
-  GallicWeightGenerator(const PG &pg) : PG(pg) {}
-};
-
-}  // namespace fst;
-
-#endif  // FST_LIB_RANDOM_WEIGHT_H__