Deleted the description of the style of overriding

src/client/styles/scss/_override-bootstrap.scss

@@ -39,12 +39,6 @@
     line-height: 14px;
   }
 
-  .small {
-    font-size: 85%;
-    line-height: 10px;
-    line-height: 1.6;
-  }
-
   code {
     padding: 2px 4px;
     font-size: 90%;