Fixing ever-present scrollbar issue on Swaps view (#11182)

* Fixing ever-present scrollbar issue on Swaps view

* Updating max-height

ui/pages/swaps/index.scss

@@ -31,11 +31,7 @@
     height: 100%;
     width: 100%;
     overflow-x: hidden;
-    overflow-y: scroll;
+    overflow-y: auto;
-
-    &--scrollable {
-      overflow: auto;
-    }
 
     @media screen and (min-width: 576px) {
       width: 460px;

ui/pages/swaps/view-quote/index.scss

@@ -22,7 +22,7 @@
 
     @media screen and (max-width: 576px) {
       overflow-y: auto;
-      max-height: 428px;
+      max-height: 420px;
     }
   }