COMP: Fix warnings unused type and unreachable value

`-Wtype-limits <0 always false`
`-Wunused-local-typedefs ValueType`

Author: phcerdan

include/itkIsotropicWaveletFrequencyFunction.hxx

@@ -97,7 +97,7 @@ IsotropicWaveletFrequencyFunction<TFunctionValue, VImageDimension, TInput>::Eval
   {
     return this->EvaluateForwardLowPassFilter(freq_norm_in_hz);
   }
-  if (j > this->m_HighPassSubBands || j < 0)
+  if (j > this->m_HighPassSubBands)
   {
     itkExceptionMacro(<< "Invalid sub-band.");
   }

test/itkRieszRotationMatrixTest.cxx

@@ -68,7 +68,6 @@ runRieszRotationMatrixInterfaceWithRieszFrequencyFilterBankGeneratorTest()
 {
   constexpr unsigned int Dimension = 2;
   // Create a rotation matrix
-  using ValueType = std::complex<double>;
   using SteerableMatrix = itk::RieszRotationMatrix<Dimension>;
   using SpatialRotationMatrix = SteerableMatrix::SpatialRotationMatrixType;
   SpatialRotationMatrix R;
@@ -227,7 +226,6 @@ runRieszRotationMatrixTest()
   bool               testPassed = true;
   const unsigned int Dimension = VDimension;
 
-  using ValueType = std::complex<double>;
   using SteerableMatrix = itk::RieszRotationMatrix<Dimension>;
   using SpatialRotationMatrix = typename SteerableMatrix::SpatialRotationMatrixType;