Delete get_pyobj() entirely (#92638)
Opt for the shorter and more direct node attribute access.
I need to do this because I'm going to publicly document
SymInt and SymFloat but I don't want to doc get_pyobj().
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/92638
Approved by: https://github.com/Chillee, https://github.com/albanD, https://github.com/voznesenskym, https://github.com/bdhirsh
