Merge pull request #8390 from liuyl/typeahead

delete typeahead style

docs/assets/css/bootstrap.css

@@ -2305,10 +2305,6 @@ input[type="button"].btn-block {
   padding-left: 20px;
 }
 
-.typeahead {
-  z-index: 1051;
-}
-
 .list-group {
   padding-left: 0;
   margin-bottom: 20px;

less/dropdowns.less

@@ -158,9 +158,3 @@
   padding-left: 20px;
   padding-right: 20px;
 }
-
-// Typeahead
-// ---------------------------
-.typeahead {
-  z-index: 1051;
-}