Remove formatting of certificate validity

javascript/src/utilities/dateTimeUtilities.js

-export const formatDateNumeric = date =>
-  date.toLocaleDateString("en-US", {
-    year: "numeric",
-    month: "numeric",
-    day: "numeric"
-  });
-

javascript/src/utilities/signingUtilities.js

@@ -2,7 +2,6 @@ import {canTryPincode, failPincodeAttempt, getTimeLeftInLocalStorage, makeid} fr
 import {bufferToHexCodes, stringToArrayBuffer} from 'pvutils';
 import {fromBER} from 'asn1js';
 import {ContentInfo, SignedData} from 'pkijs';
-import {formatDateNumeric} from './dateTimeUtilities';
 import {algomap, rdnmap} from '../constants/certificates';
 
 const libmime = require('libmime');
@@ -975,8 +974,8 @@ export const parseCertificates = signatureBase64 => {
       );
       const issuer = certificate.issuer.typesAndValues;
       const subject = certificate.subject.typesAndValues;
-      const notAfter = formatDateNumeric(certificate.notAfter.value);
-      const notBefore = formatDateNumeric(certificate.notBefore.value);
+      const notAfter = certificate.notAfter.value;
+      const notBefore = certificate.notBefore.value;
       let signatureAlgorithm =
         algomap[certificate.signatureAlgorithm.algorithmId];
       if (typeof signatureAlgorithm === "undefined") {