Leftover bool chooseBestCrossCollapse(...) fails to compile due to missing return

[StefanBruens]

The function is apparently not used.

The return was removed with f2ba3e9

[  628s] /home/abuild/rpmbuild/BUILD/meshlab-MeshLab-2022.02/src/vcglib/vcg/complex/algorithms/isotropic_remeshing.h: In static member function 'static bool vcg::tri::IsotropicRemeshing<TRI_MESH_TYPE>::chooseBestCrossCollapse(PosType&, VertexPair&, std::vector<typename CleanMeshType::FaceType*>&)':
[  628s] /home/abuild/rpmbuild/BUILD/meshlab-MeshLab-2022.02/src/vcglib/vcg/complex/algorithms/isotropic_remeshing.h:1089:5: error: no return statement in function returning non-void [-Werror=return-type]
[  628s]  1089 |     }
[  628s]       |     ^

vcglib/vcg/complex/algorithms/isotropic_remeshing.h

Lines 1038 to 1039 in e4950d1

	static bool chooseBestCrossCollapse(PosType &p, VertexPair& bp, std::vector<FaceType*> &ff)
	{