[auth openid] remove useless auth openid middleware
[auth openid] remove useless auth openid middleware

This remove one SQL query for each display of the login page.

incuna/authentic,BryceLohr/authentic,pu239ppy/authentic2,BryceLohr/authentic,adieu/authentic2,BryceLohr/authentic,incuna/authentic,adieu/authentic2,pu239ppy/authentic2,pu239ppy/authentic2,incuna/authentic,incuna/authentic,adieu/authentic2,BryceLohr/authentic,pu239ppy/authentic2,adieu/authentic2,incuna/authentic