code: def rr(self, A, b):
      return _remove_redundancy_id(A, b)
  
imports: import numpy
  from numpy.testing import assert_, assert_allclose, assert_equal
  from .test_linprog import magic_square
  from scipy.optimize._remove_redundancy import _remove_redundancy_svd
  from scipy.optimize._remove_redundancy import _remove_redundancy_pivot_dense
  from scipy.optimize._remove_redundancy import _remove_redundancy_pivot_sparse
  from scipy.optimize._remove_redundancy import _remove_redundancy_id
  from scipy.sparse import csc_matrix
label_desc: Use image node_id 1 for calling the TestRRID obj's underlying member method code with example usage: obj.rr(A, b) and returns: _remove_redundancy_id