Revert "systemd: Always create the systemd unit files"

This reverts commit 15b0a5f1eb849a30bcea9a1e437e9a88ae2c6f92.

The change had an assumption that a service
is properly configured even when it isn't enabled.
The assumption is not true.

Change-Id: Ib5a8ffe63eaec15bc29bfdd133db7169507bab82
Closes-Bug: #1698129
1 file changed