Removing css that caused issue with borders displaying in secondary and tertiary nav panels. Also moving the z-index fix for PTNFLY-1134 from list-group.less to list-view.less

Author: jgiardino

less/list-group.less

@@ -9,26 +9,10 @@
   }
 }
 .list-group-item {
-	border-top: 0;
   border-left: 0;
   border-right: 0;
-  margin-bottom: 0;
 }
 
 .list-group-item-heading {
   font-weight: 600;
 }
-
-.list-group-item {
-  &.active,
-  &.active:hover,
-  &.active:focus {
-    border-top: solid 1px @list-group-active-border;
-    margin-top: -1px;
-    z-index: auto;
-  }
-  &.active:first-child{
-    border-top: 1px solid @list-group-active-border !important;
-    margin-top: -1px;
-  }
-}

less/list-view.less

@@ -14,6 +14,7 @@
     &.active {
       color: @list-group-link-color;
       background-color: @list-view-active-bg;
+      z-index:auto;
     }
     &:hover {
       background-color: @list-view-hover-bg;