Removed userId identifier from user table, introducing numerous errors

backend/internal/database/migrations/0010_users.sql

@@ -4,7 +4,6 @@
 -- password is the hashed password
 CREATE TABLE IF NOT EXISTS users (
   id INTEGER PRIMARY KEY AUTOINCREMENT,
-  userId TEXT DEFAULT (HEX(RANDOMBLOB(4))) NOT NULL UNIQUE,
   username VARCHAR(255) NOT NULL UNIQUE,
   password VARCHAR(255) NOT NULL
 );