Removed the cylc lockserver.

This was a legacy requirement on the initial implementation of cylc
at NIWA. It is not really necessary under the new "installed suite"
paradigm (if at all) and it is longer used even at NIWA.
Removed lock server vars from jobscript test.
Merge pull request #1040 from hjoliver/remove-the-lockserver

Removed the cylc lockserver.