Should I Quit University?
You need to understand that a University degree (assuming it is a degree course you are enrolled in) does not attempt to teach you all the skills you need in order to be successful in your chosen career. What it does do is give a good grounding in your chosen area, but more importantly, provide evidence of your ability to apply yourself and achieve a widely recognized level of accreditation. If you are after courses that provide more specific vocational skills, and there are plenty of these in the computer science industry, it may be that you should search for a better suited program. These types of courses are usually shorter and more intensive than a degree course.

Whether your university degree will be useful to you will depend very much on what you intend to do with your career. 

If you plan to design and develop your own software systems or products, and then fight to have your products recognized on the global market, and build your reputation from scratch, then a degree may not be much use to you. There are some examples of success stories of people who dropped out of, or never went to, university, so nobody can tell you it can't be done. But I think you will need to be extremely good, and lucky, to be able to do that. You may also need to have a back-up plan in the meantime in order to put food on the table.

However, if you ever plan to work for somebody, or a company that does not know of your reputation and amazing ability, then you will need to somehow demonstrate that. A degree is the first step towards demonstrating to those who are likely to employ you that you have been able to apply yourself in a recognized mainstream course of learning and been able to reach recognized benchmark standards. Once in your job, you will then be expected to learn the specifics of that position, and what better way to show that you are able to learn and apply knowledge than to have a piece of paper from a university to show that you can. It will be a nationally (and in many cases, and importantly not all cases, internationally) recognized accreditation. Once you have embarked on your career, it will be the references from previous employers that will vouch for your ability, and the degree will matter less. 

What I would be asking myself as a prospective employer is whether someone who claims to have passion and ability to access resources, but lacks the application and commitment to successfully complete their degree is the right person to employ in my team.