RemixIconEx.System.filter_off

You're seeing just the function filter_off, go back to RemixIconEx.System module for more information.
Link to this function

filter_off(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.filter_off()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M6.929.515L21.07 14.657l-1.414 1.414-3.823-3.822L15 13.5V22H9v-8.5L4 6H3V4h4.585l-2.07-2.071L6.929.515zM9.585 6H6.404L11 12.894V20h2v-7.106l1.392-2.087L9.585 6zM21 4v2h-1l-1.915 2.872-1.442-1.443L17.596 6h-2.383l-2-2H21z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}