[Frontend] Moved browse mode splitter settings to CSS file

WTD-1404
WTD-1399

platform/commonUI/general/res/sass/_hide-non-functional.scss

@@ -32,15 +32,5 @@
 	.browse-area.holder {
 		// When .browse.top-bar is hidden, set the top of the browse-area holder
 		top: $bodyMargin;
-		> .contents.split-layout {
-			// Don't pad in from top and bottom
-			//top: 0; bottom: 0;
-			.object-browse-bar {
-				.btn.key-window {
-					// Hide the Open in New Window button
-//					display: none;
-				}
-			}
-		}
 	}
 }