Python3: Don't set obsolete attributes for exceptions to "sys" module.
Python3: Don't set obsolete attributes for exceptions to "sys" module.

* Setting them could confuse code potentially

* Also slower to set them without any need.

wfxiang08/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka