Remove unnecessary styling on .menu-wrapper

The styling in the dropdown.less file targeting `.menu-wrapper` was not doing anything.  Double checked on old firefox, too, in case it was needed for oddbird polyfill.

client/components/dropdown/dropdown.less

@@ -1,9 +1,4 @@
-.menu-wrapper {
-	position: relative;
-	&:is(.menu-bar > .menu-section > .menu-wrapper){
-		display: inline-block;
-	}
-}
+
 
 .menu-list {
 	position         : fixed;
@@ -12,13 +7,10 @@
 	left             : anchor(left);
 	position-try: flip-inline flip-block;
 	color: inherit;   // [popover] gets a `canvastext` color value from useragent.
-	> .menu-wrapper {
-		position:relative;
-		> .menu-list {
+	li > .menu-list {
 			margin: 0 0px;
 			top  : anchor(top);
 			left : anchor(right);
 			position-try: flip-inline;
 		}
-	}
 }