portus: removed all SKIP_MIGRATION instances
portus: removed all SKIP_MIGRATION instances

This is no longer needed since the source code of Portus will no longer
auto-migrate on production.

Signed-off-by: Miquel Sabaté Solà <b4d70704b9e7df580cab34510621dbd0aacb2dfd@suse.com>

openSUSE/docker-containers