docs: css fix

Change-Id: Ie03e7708866fd2e97347ee10f3a40b2f77b0a803
diff --git a/tools/droiddoc/templates-sdk/assets/css/default.css b/tools/droiddoc/templates-sdk/assets/css/default.css
index 65040f8..89b6c88 100644
--- a/tools/droiddoc/templates-sdk/assets/css/default.css
+++ b/tools/droiddoc/templates-sdk/assets/css/default.css
@@ -524,7 +524,6 @@
   color:#333;
 }
 ul#title-tabs li a:hover,
-ul#title-tabs li a:visited,
 ul#title-tabs li a:active {
   color:#93C !important;
 }