pool: Remove legacy hsm initialization from default pool setup

Otherwise pool startup spams the log files.

Target: trunk
Request: 2.9
Require-notees: no
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/6958/
(cherry picked from commit a01653f5a10a222ace769ce57b0acc446a432b29)
Merge pull request #520 from gbehrmann/fix/2.9/rb6958

Fix/2.9/rb6958