Removing checking for swig with crow (#2145)

RAVEN will not build without swig, so checking for swig is unnecessary.

tests/crow/tests

@@ -3,102 +3,85 @@
   type = 'CrowPython'
   #python_command = python3
   input = 'test_import.py'
-  requires_swig2 = True
  [../]
 
  [./test_utils]
   type = 'CrowPython'
   input = 'test_utils.py'
-  requires_swig2 = True
  [../]
 
 [./test_normal]
   type = 'CrowPython'
   input = 'test_normal.py'
-  requires_swig2 = True
  [../]
 
  [./test_laplace]
   type = 'CrowPython'
   input = 'test_laplace.py'
-  requires_swig2 = True
  [../]
 
  [./test_geometric]
   type = 'CrowPython'
   input = 'test_geometric.py'
-  requires_swig2 = True
  [../]
 
  [./test_svd]
   type = 'CrowPython'
   input = 'test_eigen_svd.py'
-  requires_swig2 = True
  [../]
 
  [./test_reduction]
   type = 'CrowPython'
   input = 'test_reduction.py'
-  requires_swig2 = True
  [../]
 
  [./test_pca_index]
   type = 'CrowPython'
   input = 'test_pca_index.py'
-  requires_swig2 = True
  [../]
 
  [./test_mvn_pca]
   type = 'CrowPython'
   input = 'test_mvn_pca.py'
-  requires_swig2 = True
  [../]
 
  [./test_inverseMarginalforPCA]
   type = 'CrowPython'
   input = 'test_inverseMarginalForPCA.py'
-  requires_swig2 = True
  [../]
 
  [./test_cellProbabilityWeight]
   type = 'CrowPython'
   input = 'test_cellProbabilityWeight.py'
-  requires_swig2 = True
  [../]
 
  [./test_marginalCdfForPCA]
   type = 'CrowPython'
   input = 'test_marginalCdfForPCA.py'
-  requires_swig2 = True
  [../]
 
  [./test_transformationMatrix]
   type = 'CrowPython'
   input = 'test_transformationMatrix.py'
-  requires_swig2 = True
  [../]
 
  [./test_svd_index]
   type = 'CrowPython'
   input = 'test_svd_index.py'
-  requires_swig2 = True
  [../]
 
  [./test_transformationMatrix_index]
   type = 'CrowPython'
   input = 'test_transformationMatrix_index.py'
-  requires_swig2 = True
  [../]
 
  [./test_inverse_transformationMatrix]
   type = 'CrowPython'
   input = 'test_inverse_transformation_matrix.py'
-  requires_swig2 = True
  [../]
- 
+
  [./test_symmetric_psd]
   type = 'CrowPython'
   input = 'test_symmetric_psd.py'
-  requires_swig2 = True
  [../]
 []