remove unused css

Author: Lukas Markeffsky

src/librustdoc/html/static/css/rustdoc.css

@@ -439,7 +439,6 @@ img {
 
 .sidebar-resizing .sidebar {
 	position: fixed;
-	z-index: 100;
 }
 .sidebar-resizing > body {
 	padding-left: var(--resizing-sidebar-width);
@@ -1553,14 +1552,10 @@ a.tooltip:hover::after {
 	display: flex;
 	margin-right: 4px;
 	position: fixed;
-	left: 6px;
+	left: 8px;
 	height: 34px;
 	width: 34px;
 	background-color: var(--main-background-color);
-	z-index: 1;
-}
-.src #sidebar-button {
-	left: 8px;
 	z-index: 101;
 }
 .hide-sidebar .src #sidebar-button {