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diff --git a/runtimes/nn/depend/external/eigen/Eigen/src/MetisSupport/MetisSupport.h b/runtimes/nn/depend/external/eigen/Eigen/src/MetisSupport/MetisSupport.h
deleted file mode 100644
index 4c15304ad..000000000
--- a/runtimes/nn/depend/external/eigen/Eigen/src/MetisSupport/MetisSupport.h
+++ /dev/null
@@ -1,137 +0,0 @@
-// This file is part of Eigen, a lightweight C++ template library
-// for linear algebra.
-//
-// Copyright (C) 2012 Désiré Nuentsa-Wakam <desire.nuentsa_wakam@inria.fr>
-//
-// This Source Code Form is subject to the terms of the Mozilla
-// Public License v. 2.0. If a copy of the MPL was not distributed
-// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
-#ifndef METIS_SUPPORT_H
-#define METIS_SUPPORT_H
-
-namespace Eigen {
-/**
- * Get the fill-reducing ordering from the METIS package
- * 
- * If A is the original matrix and Ap is the permuted matrix, 
- * the fill-reducing permutation is defined as follows :
- * Row (column) i of A is the matperm(i) row (column) of Ap. 
- * WARNING: As computed by METIS, this corresponds to the vector iperm (instead of perm)
- */
-template <typename StorageIndex>
-class MetisOrdering
-{
-public:
-  typedef PermutationMatrix<Dynamic,Dynamic,StorageIndex> PermutationType;
-  typedef Matrix<StorageIndex,Dynamic,1> IndexVector; 
-  
-  template <typename MatrixType>
-  void get_symmetrized_graph(const MatrixType& A)
-  {
-    Index m = A.cols(); 
-    eigen_assert((A.rows() == A.cols()) && "ONLY FOR SQUARED MATRICES");
-    // Get the transpose of the input matrix 
-    MatrixType At = A.transpose(); 
-    // Get the number of nonzeros elements in each row/col of At+A
-    Index TotNz = 0; 
-    IndexVector visited(m); 
-    visited.setConstant(-1); 
-    for (StorageIndex j = 0; j < m; j++)
-    {
-      // Compute the union structure of of A(j,:) and At(j,:)
-      visited(j) = j; // Do not include the diagonal element
-      // Get the nonzeros in row/column j of A
-      for (typename MatrixType::InnerIterator it(A, j); it; ++it)
-      {
-        Index idx = it.index(); // Get the row index (for column major) or column index (for row major)
-        if (visited(idx) != j ) 
-        {
-          visited(idx) = j; 
-          ++TotNz; 
-        }
-      }
-      //Get the nonzeros in row/column j of At
-      for (typename MatrixType::InnerIterator it(At, j); it; ++it)
-      {
-        Index idx = it.index(); 
-        if(visited(idx) != j)
-        {
-          visited(idx) = j; 
-          ++TotNz; 
-        }
-      }
-    }
-    // Reserve place for A + At
-    m_indexPtr.resize(m+1);
-    m_innerIndices.resize(TotNz); 
-
-    // Now compute the real adjacency list of each column/row 
-    visited.setConstant(-1); 
-    StorageIndex CurNz = 0; 
-    for (StorageIndex j = 0; j < m; j++)
-    {
-      m_indexPtr(j) = CurNz; 
-      
-      visited(j) = j; // Do not include the diagonal element
-      // Add the pattern of row/column j of A to A+At
-      for (typename MatrixType::InnerIterator it(A,j); it; ++it)
-      {
-        StorageIndex idx = it.index(); // Get the row index (for column major) or column index (for row major)
-        if (visited(idx) != j ) 
-        {
-          visited(idx) = j; 
-          m_innerIndices(CurNz) = idx; 
-          CurNz++; 
-        }
-      }
-      //Add the pattern of row/column j of At to A+At
-      for (typename MatrixType::InnerIterator it(At, j); it; ++it)
-      {
-        StorageIndex idx = it.index(); 
-        if(visited(idx) != j)
-        {
-          visited(idx) = j; 
-          m_innerIndices(CurNz) = idx; 
-          ++CurNz; 
-        }
-      }
-    }
-    m_indexPtr(m) = CurNz;    
-  }
-  
-  template <typename MatrixType>
-  void operator() (const MatrixType& A, PermutationType& matperm)
-  {
-     StorageIndex m = internal::convert_index<StorageIndex>(A.cols()); // must be StorageIndex, because it is passed by address to METIS
-     IndexVector perm(m),iperm(m); 
-    // First, symmetrize the matrix graph. 
-     get_symmetrized_graph(A); 
-     int output_error;
-     
-     // Call the fill-reducing routine from METIS 
-     output_error = METIS_NodeND(&m, m_indexPtr.data(), m_innerIndices.data(), NULL, NULL, perm.data(), iperm.data());
-     
-    if(output_error != METIS_OK) 
-    {
-      //FIXME The ordering interface should define a class of possible errors 
-     std::cerr << "ERROR WHILE CALLING THE METIS PACKAGE \n"; 
-     return; 
-    }
-    
-    // Get the fill-reducing permutation 
-    //NOTE:  If Ap is the permuted matrix then perm and iperm vectors are defined as follows 
-    // Row (column) i of Ap is the perm(i) row(column) of A, and row (column) i of A is the iperm(i) row(column) of Ap
-    
-     matperm.resize(m);
-     for (int j = 0; j < m; j++)
-       matperm.indices()(iperm(j)) = j;
-   
-  }
-  
-  protected:
-    IndexVector m_indexPtr; // Pointer to the adjacenccy list of each row/column
-    IndexVector m_innerIndices; // Adjacency list 
-};
-
-}// end namespace eigen 
-#endif