removed obsolete static files, and fixed hover over short icons

rhodecode/public/css/style.css

@@ -355,7 +355,6 padding:8px 8px 4px;
 top:0;
 left:0;
 border-left:none;
-background:url("../images/quick_l.png") no-repeat top left;
 border-right:1px solid #2e5c89;
 padding:9px 4px 4px;
 }