Remove undefined jobs and update other references

Remove old reference to job 'api-jobs' which has already been removed
by a previous commit. Update remaining jobs which have been renamed.

Change-Id: I74f2940ea6f59836fda93e5fef5a9083b699b1bb
Remove jeepyb from the requirements gate

pypi-mirror is now used in the requirements integration gate.
Remove jeepyb from that gate, as it's pointless.

Change-Id: I5bb5a115ef3a5057d17ff1e6a5a43894fc9c1055
Merge "Remove undefined jobs and update other references"
Merge "Remove jeepyb from the requirements gate"