WRG: unused typedefs in examples and other warnings

Applications/Hyperspectral/otbHyperspectralUnmixing.cxx

Applications/Hyperspectral/otbVertexComponentAnalysis.cxx

Code/DisparityMap/otbBijectionCoherencyFilter.txx

Code/DisparityMap/otbDisparityTranslateFilter.txx

Code/DisparityMap/otbMulti3DMapToDEMFilter.txx

Code/FeatureExtraction/otbHaralickTexturesImageFunction.txx

Code/Simulation/otbReduceSpectralResponse.txx

Examples/Filtering/GeometriesChangeSpatialReference.cxx

Examples/IO/OGRWrappersExample.cxx

Examples/Patented/EstimateAffineTransformationExample.cxx

Examples/Patented/SIFTDensityExample.cxx

Examples/Patented/SIFTDisparityMapEstimation.cxx

Examples/Patented/SIFTExample.cxx