Hello,

Sorry for the late reply!
Add this code to your custom CSS box to remove the slider arrows on mobile view:

@media (max-width: 480px) {
div#rev_slider_1_1 .tp-leftarrow.tparrows.uranus {
    display: none;
}
div#rev_slider_1_1 .tp-rightarrow.tparrows.uranus {
    display: none;
}
}

Let us know.

Best regards!