[server] Drop inexistent "bootstrap" argument in Repository initialization
This is a missing bit from 5de78b6fff2e. Unfortunately this code appears to be
uncovered by our test suite.
missing-dep-for-interpreter make => make | build-essential | dpkg-dev (usr/*/cubicweb/skeleton/debian/rules)
embedded-javascript-library usr/share/cubicweb/cubes/shared/data/jquery.js