Remove ignored properties in certain combinations

Removing
- `clear` when used with `position: absolute`
- `float` when used with `position: absolute`

Change-Id: I14661c4078e4d5f776596842674cef7e7ddcf708

components/tabs.less

@@ -139,7 +139,6 @@
 	.menu {
 		background-color: @background-color-base;
 		list-style: none none;
-		clear: both;
 		// Match the width of the dropdown "heading" (the tab)
 		min-width: 100%;
 		position: absolute;

responsive.less

@@ -63,19 +63,19 @@
 	}
 
 	#right-navigation {
+		// float: none; Override not needed with `position: absolute` above.
 		position: absolute;
 		top: inherit;
 		right: 0;
 		margin-top: 0;
-		float: none;
 	}
 
 	#left-navigation {
+		// float: none; Override not needed with `position: absolute` above.
 		position: absolute;
 		top: inherit;
 		margin: 0;
 		display: block;
-		float: none;
 	}
 
 	#p-namespaces,
@@ -95,7 +95,7 @@
 	}
 
 	#p-search {
-		float: none;
+		// float: none; Override not needed with `position: absolute` above.
 		position: absolute;
 		right: 0;
 		width: 100vw;