Comment out unused navigation label styles in custom.css

Author: zfergus

docs/source/_static/css/custom.css

@@ -86,7 +86,7 @@ table.autosummary {
     font-size: 0.75rem !important;
 }
 
-#__nav_1_label,
+/* #__nav_1_label,
 #__nav_2_label,
 #__nav_3_label,
 #__nav_4_label,
@@ -96,4 +96,4 @@ table.autosummary {
 .md-nav--secondary .md-nav__title,
 .md-nav--primary .md-nav__title {
     margin-bottom: 10px;
-}
+} */