Remove fixme in ConvolutionDetectorResolution

Core/Algorithms/src/ConvolutionDetectorResolution.cpp

@@ -56,7 +56,6 @@ ConvolutionDetectorResolution::ConvolutionDetectorResolution(const ConvolutionDe
 //    : IDetectorResolution(other)
 {
     m_dimension = other.m_dimension;
-    // FIXME is it ok to assign pointer to function like that ?
     m_res_function_1d=other.m_res_function_1d;
     mp_res_function_2d = other.mp_res_function_2d->clone();
     setName(other.getName());