style: remove repeated attribute

remove repeated attribute

Author: simdd

components/vc-notification/assets/index.less

@@ -7,9 +7,8 @@
   &-notice {
     padding: 7px 20px 7px 10px;
     border-radius: 3px 3px;
-    border: 1px solid #999;;
     box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
-    border: 0px solid rgba(0, 0, 0, 0);;
+    border: 0px solid rgba(0, 0, 0, 0);
     background: #fff;
     display: block;
     width: auto;
@@ -93,4 +92,4 @@
       opacity: 0;
     }
   }
-}
+}