First of all you need a code editor we recommend to use Visual Studio Code You can also use Notepad++
Now right click on your index.html to edit the file. And find this code.
<div class="banner-container">
<div class="main-banner">
<div class="slide transparent-background slide-one">
<div class="slide-text container">
<h2>Computer Clinic Repair Services & Products</h2>
<p>We know this very well how much do you love your computer and mobile phones that’s why we are a dedicated team of professionals.</p>
<a href="#" class="btn btn-primary btn-animated">Request a Quote</a>
<a href="#" class="btn btn-secondary btn-dark-animated">Find Out More</a>
</div>
</div><!-- Slide /-->
<div class="slide transparent-background slide-two">
<div class="slide-text container">
<h2>Computer Clinic Repair Services & Products</h2>
<p>We know this very well how much do you love your computer and mobile phones that’s why we are a dedicated team of professionals.</p>
<a href="#" class="btn btn-primary btn-animated">Request a Quote</a>
<a href="#" class="btn btn-secondary btn-dark-animated">Find Out More</a>
</div>
</div><!-- Slide /-->
<div class="slide transparent-background slide-one">
<div class="slide-text container">
<h2 class="">Computer Clinic Repair Services & Products</h2>
<p>We know this very well how much do you love your computer and mobile phones that’s why we are a dedicated team of professionals.</p>
<a href="#" class="btn btn-primary btn-animated">Request a Quote</a>
<a href="#" class="btn btn-secondary btn-dark-animated">Find Out More</a>
</div>
</div><!-- Slide /-->
</div><!-- Main Banner /-->
</div><!-- Banner Container /-->
</div>
<!-- Nav Banner Container /-->
Remove this code once you remove it the slider would go away from your file.