Remove unnecessary test file.

session.json

-{"state": "jmyaZVerD9dse8q4", "nonce": "O4lSclCPVa7ixFXe", "client_id": "j88zJEukF7wy", "client_secret": "e940c3374df6ad35ba2ce56fbfbbe8fe24a6474f198cac10abaa1f3f", "openid_uid": "janbednarik@mojeid.cz", "redirect_uri": "http://localhost:8020/login-redirect/"}
\ No newline at end of file