Fix issues with scrollbar in currency display.

ui/app/components/send/currency-display.js

@@ -149,7 +149,7 @@ CurrencyDisplay.prototype.render = function () {
           } : {}),
           ref: input => { this.currencyInput = input },
           style: {
-            minWidth: this.getInputWidth(valueToRender, readOnly),
+            width: this.getInputWidth(valueToRender, readOnly),
           },
           min: 0,
         }),

ui/app/css/itcss/components/currency-display.scss

@@ -48,7 +48,6 @@
     display: flex;
     flex: 1;
     max-width: 100%;
-    overflow-x: scroll;
 
     input[type="number"]::-webkit-inner-spin-button {
       -webkit-appearance: none;