update timepicker clear btn style

style/components/timepicker/Header.less

@@ -22,14 +22,14 @@
 
   &-clear-btn {
     position: absolute;
-    right: 6px;
+    right: 5px;
     cursor: pointer;
     overflow: hidden;
     width: 20px;
     height: 20px;
     text-align: center;
     line-height: 20px;
-    top: 6px;
+    top: 5px;
     margin: 0;
   }