[devtools/test] drop legacy cube i18n tests test_i18ncube_legacy_layout() is droped and make others tests uses a new style cube "cubicweb_i18ntestcube", so it doesn't depends on legacy cube machinery.

[bdist_wheel]
universal = 1

[check-manifest]
ignore =
  debian
  debian/*
  cubicweb.spec
  __pkginfo__.py