[kineto] deprecate pthreadid (#56209)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56209
Pull Request resolved: https://github.com/pytorch/kineto/pull/172
in this diff of the stack, we remove the threadId field from the ClientTraceActivity as our step towards the deprecation
Test Plan: sandcastle builds to cover all the dependent targets
Reviewed By: ilia-cher
Differential Revision: D27662747
fbshipit-source-id: 040ba040390680a0fc63ddc8149c6fad940439fc
