العواقب المترتبة على الاستقالة عند العمل بموجب عقد محدد المدة

As provided under the labour code, there is no need for a notice period as mandated by the code, as you are still in the probation.

However, you still need to submit your resignation letter.

On the other hand, since your visa is "Cleaning Worker" you might face an automatic ban, and your employer may seek some cause for not completing your contract (please check your contract to know your liabilities).