removing error code that wont happen on the api it was being handled against

Author: rmisio

js/languages/en_US.json

@@ -1515,7 +1515,6 @@
       "genericPurchaseErrTitle": "Unable To Complete The Purchase",
       "invalidCoinDiv": "The listing does not have a valid coin divisibility.",
       "unableToConvertCryptoQuantity": "Unable to convert the crypto quantity to base units.",
-      "serverErrorInsufficientFunds": "You do not have sufficient funds to complete the purchase.",
       "serverErrorBelowDust": "The purchase price is below the minimum spend amount for the payment currency."
     }
   },

js/templates/modals/editListing/coupon.html

@@ -17,7 +17,7 @@
         if (ob.bigPriceDiscount) {
           discountAmount = ob.number.toStandardNotation(ob.bigPriceDiscount);
         } else if (typeof ob.percentDiscount !== 'undefined') {
-          discountAmount = ob.percentDiscount;
+          discountAmount =  ob.number.toStandardNotation(ob.percentDiscount);
         }
 
         const isFixedDiscount = !!ob.bigPriceDiscount;

js/views/modals/purchase/Purchase.js

@@ -4,10 +4,7 @@ import Backbone from 'backbone';
 import bigNumber from 'bignumber.js';
 import '../../../lib/select2';
 import '../../../utils/lib/velocity';
-import {
-  ERROR_INSUFFICIENT_FUNDS,
-  ERROR_DUST_AMOUNT,
-} from '../../../constants';
+import { ERROR_DUST_AMOUNT } from '../../../constants';
 import { removeProp } from '../../../utils/object';
 import app from '../../../app';
 import loadTemplate from '../../../utils/loadTemplate';
@@ -584,10 +581,6 @@ export default class extends BaseModal {
                 }).format(this.inventory),
               });
               if (this.inventoryFetch) this.inventoryFetch.abort();
-            } else if (errMsg === ERROR_INSUFFICIENT_FUNDS) {
-              // This one really shouldn't show because the client checks that funds
-              // are available locally.
-              errMsg = app.polyglot.t('purchase.errors.serverErrorInsufficientFunds');
             } else if (errMsg === ERROR_DUST_AMOUNT) {
               errMsg = app.polyglot.t('purchase.errors.serverErrorBelowDust');
             }