[TDF] Remove "upcasting" conversion operator of TDF::TInterface
[TDF] Remove "upcasting" conversion operator of TDF::TInterface

With lazy jitting, it's now unused.

olifre/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,karies/root,olifre/root,olifre/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,karies/root,karies/root,karies/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,karies/root,root-mirror/root,karies/root,olifre/root,olifre/root,karies/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root