rustdoc: remove unused .sidebar-logo DOM on source pages

Author: notriddle

src/librustdoc/html/static/css/noscript.css

@@ -18,3 +18,7 @@ nav.sub {
 	/* The search bar and related controls don't work without JS */
 	display: none;
 }
+
+.source .sidebar {
+	display: none;
+}

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

@@ -402,10 +402,6 @@ img {
 	overflow-y: hidden;
 }
 
-.rustdoc.source .sidebar .sidebar-logo {
-	display: none;
-}
-
 .source .sidebar, #sidebar-toggle, #source-sidebar {
 	background-color: var(--sidebar-background-color);
 }

src/librustdoc/html/templates/page.html

@@ -89,6 +89,7 @@ <h2></h2> {#- -#}
     </nav> {#- -#}
     {%- endif -%}
     <nav class="sidebar"> {#- -#}
+        {%- if page.css_class != "source" -%}
         <a class="sidebar-logo" href="{{page.root_path|safe}}{{krate_with_trailing_slash|safe}}index.html"> {#- -#}
             <div class="logo-container"> {#- -#}
                 {%- if !layout.logo.is_empty()  %}
@@ -98,6 +99,7 @@ <h2></h2> {#- -#}
                 {%- endif -%}
             </div> {#- -#}
         </a> {#- -#}
+        {%- endif -%}
         {{- sidebar|safe -}}
     </nav> {#- -#}
     <main> {#- -#}

src/test/rustdoc-gui/sidebar-source-code-display.goml

@@ -3,7 +3,7 @@ javascript: false
 goto: "file://" + |DOC_PATH| + "/src/test_docs/lib.rs.html"
 // Since the javascript is disabled, there shouldn't be a toggle.
 assert-false: "#sidebar-toggle"
-wait-for-css: (".sidebar > *", {"visibility": "hidden"})
+wait-for-css: (".sidebar", {"display": "none"})
 
 // Let's retry with javascript enabled.
 javascript: true