Remove boost compressed source file and build script, make an
additional update to a test script to remove a now unneeded setting.

This is a continuation of r5417 making changes to use system installed
boost instead of the included version of boost (boost_irods.tar.bz2)
which was no longer compatible.


git-svn-id: svn://irodssvn.ucsd.edu/trunk@5419 ea137bd6-aa86-47b6-b90d-b101d9f19a90