WRG: Remove warning unused variable.

Code/Radiometry/otbRadarFunctors.txx

@@ -182,7 +182,6 @@ TerraSarCalibrationComplexImageFunctor<TInput, TOutput>
       {
        // m_ImageSize[1]-(lineId+1) because the first acquisition line is the last image one.
        // line+1 because image starts to 0.
-       double interval =  static_cast<double>(m_ImageSize[1]) / static_cast<double>(m_NoisePolynomialCoefficientsList.size());
        // compute utc time of the line
        double currTimeUTC = m_TimeUTC[0] + static_cast<double>(m_ImageSize[1]-(lineId-1))*m_InvPRF;
        unsigned int id = 0;