Bug 1284432 - Make cycling data more efficient
Bug 1284432 - Make cycling data more efficient

Don't get all job guids per project at once, then chunk, then delete the
chunks. Get a chunk, delete that chunk, then get another, delete that,
etc. This should be more memory and time efficient.

tojonmz/treeherder,KWierso/treeherder,tojon/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder,KWierso/treeherder,kapy2010/treeherder,kapy2010/treeherder,kapy2010/treeherder,tojonmz/treeherder,edmorley/treeherder,tojonmz/treeherder,KWierso/treeherder,tojonmz/treeherder,tojon/treeherder,tojonmz/treeherder,tojon/treeherder,tojon/treeherder,kapy2010/treeherder,tojonmz/treeherder,edmorley/treeherder,kapy2010/treeherder