Remove badge/issuer.php reference

Requirements One account on badgr.io Setup As admin verify that badges are enabled in Administration / Site administration / Advanced features. Configure Badgr as you default backpack: https://docs.moodle.org/en/Badges_settings#Enabling_Badgr_as_the_active_external_backpack   Go to "Site administration / Badges / Manage Badges / Add a new badge" and create a badge at site level. Add a criteria to the badge so it can be manually issued by role. Enable the badge. Issue the badge to the admin user. Access to "Site administration / Badges / Backpack settings" and make sure the site backpack is set to "https://badgr.io". Testing instructions View this user's profile page. Verify  that in "Badges from  [Moodle instance name] " you now see your local badge. Access to the badge. Verify  the page is displayed without errors. In the URL, replace  badges/badge.php?hash=  to  badges/assertion.php?b=  (the context after hash= should be keept). Check  "badge / issuer / url" in the JSON content references to the Moodle home site (no /badges/issuer.php should be found). Check  "badge / issuer / id" in the JSON content references to /badges/issuer_json.php?id=xx (xx is the badge identifier). Copy the URL in the previous "badge / issuer / id" field. Access to this URL, removing the final part ("?id=xx"). Check  "badge / issuer / url" in the JSON content references to the Moodle home site (no /badges/issuer.php should be found). Check  "badge / issuer / id" in the JSON content references to /badges/issuer_json.php