ENH: remove unused header from OTB files

...raphicDBValidation/otbComputePolylineFeatureFromImage.cxx

...ns/CartographicDBValidation/otbDSFuzzyModelEstimation.cxx

...ns/CartographicDBValidation/otbVectorDataDSValidation.cxx

Applications/Classification/otbComputeConfusionMatrix.cxx

Applications/Classification/otbFusionOfClassifications.cxx

Applications/Classification/otbImageClassifier.cxx

Applications/Classification/otbKMeansClassification.cxx

Applications/Classification/otbSOMClassification.cxx

Applications/Classification/otbTrainImagesClassifier.h

Applications/DisparityMap/otbBlockMatching.cxx

Applications/DisparityMap/otbDisparityMapToElevationMap.cxx

Applications/DisparityMap/otbGeneratePlyFile.cxx

Applications/DisparityMap/otbStereoFramework.cxx

...ions/DisparityMap/otbStereoRectificationGridGenerator.cxx

...ications/FeatureExtraction/otbDimensionalityReduction.cxx

...tions/FeatureExtraction/otbHomologousPointsExtraction.cxx

Applications/FeatureExtraction/otbLineSegmentDetection.cxx

Applications/FeatureExtraction/otbRadiometricIndices.cxx

Applications/Fusion/otbPansharpening.cxx

Applications/Hyperspectral/otbHyperspectralUnmixing.cxx