Remove dark highlight circles from annotated JS code in FF

Author: eloyer

system/application/views/widgets/mediaelement/prism.css

@@ -156,7 +156,7 @@ pre[data-line] {
 		left: .6em;
 		min-width: 1em;
 		padding: 0 .5em;
-		background-color: hsla(24, 20%, 50%,.4);
+		/*background-color: hsla(24, 20%, 50%,.4); disabled to remove brown circles to left of lines in FF */
 		color: hsl(24, 20%, 95%);
 		font: bold 65%/1.5 sans-serif;
 		text-align: center;