SofaEngine/ValuesFromIndices: uncomment some instanciations
SofaEngine/ValuesFromIndices: uncomment some instanciations

Those two instanciations:

  ValuesFromIndices<defaulttype::Rigid2dTypes::Deriv>
  ValuesFromIndices<defaulttype::Rigid2fTypes::Deriv>

were commented out because at some point, Rigid2dTypes::Deriv was the
same as Vec3d (f0c1b838), but this change was reverted since then
(2d629adf).


Former-commit-id: 2e4e9a386323fdf8bbe49e996816273d7c040d69
Anatoscope/sofa,hdeling/sofa,hdeling/sofa,hdeling/sofa,Anatoscope/sofa,hdeling/sofa,Anatoscope/sofa,FabienPean/sofa,hdeling/sofa,Anatoscope/sofa,FabienPean/sofa,hdeling/sofa,Anatoscope/sofa,FabienPean/sofa,FabienPean/sofa,hdeling/sofa,hdeling/sofa,hdeling/sofa,FabienPean/sofa,FabienPean/sofa,Anatoscope/sofa,FabienPean/sofa,FabienPean/sofa,Anatoscope/sofa,Anatoscope/sofa,FabienPean/sofa,Anatoscope/sofa,hdeling/sofa,FabienPean/sofa