[CI] Remove broken upload binary size step (#79282)
Looking at our logs, I noticed that this step has been failing for I don't know how long. If it's gone unnoticed and no one has really cared to look at these stats, we should just stop reporting.
Failing regular build size upload: https://github.com/pytorch/pytorch/runs/6833171493?check_suite_focus=true
Failing android build size upload: https://github.com/pytorch/pytorch/runs/6832343869?check_suite_focus=true
Pull Request resolved: https://github.com/pytorch/pytorch/pull/79282
Approved by: https://github.com/suo, https://github.com/malfet
