Add `is_floating_point` and `div_` PyTorch ops (#7128)
Add `is_floating_point` and `div_` PyTorch ops (#7128)

* Add div_ and is_floating_point operators

* Add handling of exprs to op, update tests

* Revert changes to tests

* reintroduce newline

* Fix style
Laurawly/tvm-1,dmlc/tvm,dmlc/tvm,dmlc/tvm,Laurawly/tvm-1,dmlc/tvm,Laurawly/tvm-1,dmlc/tvm,Laurawly/tvm-1,Laurawly/tvm-1,Laurawly/tvm-1,dmlc/tvm,Laurawly/tvm-1,dmlc/tvm,Laurawly/tvm-1,Laurawly/tvm-1,dmlc/tvm,Laurawly/tvm-1,dmlc/tvm