chore(colorslider): remove unused token

Author: cdransf

components/colorslider/index.css

@@ -13,7 +13,6 @@
 
 .spectrum-ColorSlider {
 	/* Size and Spacing */
-	--spectrum-color-slider-handle-margin-block: var(--spectrum-component-top-to-text-75);
 	--spectrum-color-slider-control-track-width: var(--spectrum-color-control-track-width);
 
 	/* @todo Refactor with --spectrum-color-slider-border-color once gray rgb token is no longer necessary to workaround nested rgb color token value using rgba(). */