pytorch

4f37150f - Revert D26179083: [TensorExpr] Introduce ExternalCall nodes to TE IR.

Revert D26179083: [TensorExpr] Introduce ExternalCall nodes to TE IR. Test Plan: revert-hammer Differential Revision: D26179083 (https://github.com/pytorch/pytorch/commit/f4fc3e3920c75ba978765dcaded39a606eb7992a) Original commit changeset: 9e44de098ae9 fbshipit-source-id: d15684e04c65c395b4102d4f98a4488482822d1b