fix: removes username from user model

app/models/user.py

@@ -4,7 +4,6 @@ from app.extensions import db
 
 class User(db.Model):
   id = mapped_column(db.Integer, primary_key=True, autoincrement=True)
-  username = mapped_column(db.String(255), nullable=False)
   email = mapped_column(db.String(255), nullable=False, unique=True)
   password = mapped_column(db.String(255), nullable=False)
   name = mapped_column(db.String(255), nullable=False)

app/services/user_service.py

@@ -28,7 +28,6 @@ class UserService:
       address: str = UserValidators.is_valid_address(form.get("address"))
       
       new_user = User(
-        username="test", 
         name=name, 
         lastname=lastname, 
         email=email,