STYLE : try/catch blocs supression in IO testing.

Testing/Code/IO/otbBSQImageIOTestCanRead.cxx

Testing/Code/IO/otbBSQImageIOTestCanWrite.cxx

Testing/Code/IO/otbCAIImageIOTestCanRead.cxx

Testing/Code/IO/otbCAIImageIOTestCanWrite.cxx

Testing/Code/IO/otbDEMHandlerNew.cxx

Testing/Code/IO/otbDEMHandlerTest.cxx

Testing/Code/IO/otbDEMToImageGeneratorNew.cxx

Testing/Code/IO/otbDEMToImageGeneratorTest.cxx

Testing/Code/IO/otbDXFToSpatialObjectGroupFilterNew.cxx

Testing/Code/IO/otbDoubleImageIOTest.cxx

Testing/Code/IO/otbFloatImageIOTest.cxx

Testing/Code/IO/otbGDALImageIOTestCanRead.cxx

Testing/Code/IO/otbGDALImageIOTestCanWrite.cxx

Testing/Code/IO/otbIOTests1.cxx

Testing/Code/IO/otbIOTests10.cxx

Testing/Code/IO/otbIOTests11.cxx

Testing/Code/IO/otbIOTests12.cxx

Testing/Code/IO/otbIOTests13.cxx

Testing/Code/IO/otbIOTests14.cxx

Testing/Code/IO/otbIOTests15.cxx