Cleanup - fix two broken script paths and drop 29 dead/duplicate files (348KB of unused FullCalendar themes)

js/credential_show_otp_via_id.js

@@ -1,16 +0,0 @@
-function showOTPViaCredentialID(credential_id) {
-    // Send a GET request to ajax.php as ajax.php?get_totp_token_via_id=true&credential_id=ID
-    itflowGet(
-        "../ajax.php", {
-            get_totp_token_via_id: 'true',
-            credential_id: credential_id
-        },
-        function(data) {
-            //If we get a response from post.php, parse it as JSON
-            const token = JSON.parse(data);
-
-            document.getElementById("otp_" + credential_id).innerText = token
-
-        }
-    );
-}