Remove old hack around the ambiguity in the interface between 3-vectors and skew-symmetric matrices

[[Imported from SVN: r8861]]

dune/gfe/targetspacertrsolver.cc

@@ -107,15 +107,7 @@ void TargetSpaceRiemannianTRSolver<TargetSpace>::solve()
         // ////////////////////////////////////////////////////
         
         TargetSpace newIterate = x_;
-#if 0   // out-commented until the Rotation class can distinguish skew-symmetric matrices from three-vectors
         newIterate = TargetSpace::exp(newIterate, corr[0]);
-#else
-        Dune::FieldMatrix<double,TargetSpace::TangentVector::dimension,TargetSpace::EmbeddedTangentVector::dimension> B = x_.orthonormalFrame();
-        Dune::FieldVector<double,TargetSpace::EmbeddedTangentVector::dimension> embeddedCorr(0);
-        B.mtv(corr[0], embeddedCorr);
-   
-        newIterate = TargetSpace::exp(newIterate, embeddedCorr);
-#endif
         
         /** \todo Don't always recompute oldEnergy */
         double oldEnergy = assembler_->value(x_);