Revert "Wrap the `time` command in powershell"
Revert "Wrap the `time` command in powershell"

This reverts commit 797f631c025a69b47233fbec39f354b6009a72de.

gu-bin/bosh-agent,mattcui/bosh-agent,gu-bin/bosh-agent,mattcui/bosh-agent,cloudfoundry/bosh-agent,cloudfoundry/bosh-agent,mattcui/bosh-agent,gu-bin/bosh-agent