Windows: Deleted dead code from `process::internal` namespace.
Windows: Deleted dead code from `process::internal` namespace.

The deleted code was purely self-referential.

Review: https://reviews.apache.org/r/66429

jpeach/mesos,kaysoky/mesos,dforsyth/mesos,kaysoky/mesos,jpeach/mesos,gsantovena/mesos,Gilbert88/mesos,gsantovena/mesos,gsantovena/mesos,andschwa/mesos,abudnik/mesos,jpeach/mesos,abudnik/mesos,reneploetz/mesos,gsantovena/mesos,jpeach/mesos,kaysoky/mesos,Gilbert88/mesos,reneploetz/mesos,chhsia0/mesos,Gilbert88/mesos,dforsyth/mesos,reneploetz/mesos,gsantovena/mesos,kaysoky/mesos,andschwa/mesos,jpeach/mesos,andschwa/mesos,chhsia0/mesos,jpeach/mesos,dforsyth/mesos,gsantovena/mesos,reneploetz/mesos,kaysoky/mesos,reneploetz/mesos,andschwa/mesos,chhsia0/mesos,andschwa/mesos,abudnik/mesos,andschwa/mesos,Gilbert88/mesos,reneploetz/mesos,chhsia0/mesos,abudnik/mesos,Gilbert88/mesos,Gilbert88/mesos,jpeach/mesos,Gilbert88/mesos,dforsyth/mesos,abudnik/mesos,abudnik/mesos,dforsyth/mesos,abudnik/mesos,dforsyth/mesos,chhsia0/mesos,gsantovena/mesos,kaysoky/mesos,chhsia0/mesos,kaysoky/mesos,dforsyth/mesos,andschwa/mesos,chhsia0/mesos,reneploetz/mesos