Hi @gokh
You can not remove that code, since that CSS defines the layout of other elements too that has the same class:
.elementor-column-gap-default>.elementor-row>.elementor-column>.elementor-element-populated {
padding: 10px;
}
https://sal.tuyograf.com/wp-content/plugins/elementor/assets/css/frontend.min.css?ver=2.6.6
this means, if you remove that CSS, that would also remove the gap between the other elements, too.
So what I would suggest in this case, is publishing a slider outside of that stucture that has this 10px padding, to a different Elementor Row/Column where you have 0 padding.
Anyway if that is not possible then, you could try a custom CSS code like:
div.elementor-element-e059333 div.elementor-element-populated{
padding:0px!important;
}
what you could insert to Slider Settings > Developer tab > CSS:
https://smartslider3.helpscoutdocs.com/article/1294-slider-settings-developer