[net_runner] Get shape info from qtensors (#34321)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34321
Mostly cosmetic as we can infer the shape anyway. It can remove a lot of the noise in the log though.
Note that weight sharing doesn't work yet. I'll add another diff to address this.
Reviewed By: houseroad
Differential Revision: D20290841
fbshipit-source-id: fe6f9b60d05dbe150af15b5d9d7a69fd902e12cc
