This patch is one of follow up to remove unnecessary
files, and a comment in the code.
The conf files are used to setup functests environment
in the past swift3 repository but that should port to
setuppers of functests (see related change). Anyway,
we don't need shell based older conf.in script on that way.
Change-Id: If431979ea6fa373ac1cde4b7e13d57d91fb15be8
Related-Change: I6f30f74678ad35479da237361bee48c46c0ecc49
2c7768a3cb