remove updateTimezone function in PersonalDetails

src/libs/actions/PersonalDetails.js

@@ -12,7 +12,6 @@ import * as LoginUtils from '../LoginUtils';
 import * as ReportUtils from '../ReportUtils';
 import Growl from '../Growl';
 import * as Localize from '../Localize';
-import DateUtils from '../DateUtils';
 
 let currentUserEmail = '';
 Onyx.connect({
@@ -260,14 +259,6 @@ function setPersonalDetails(details, shouldGrowl) {
         });
 }
 
-/*
- * Updates user's timezone, if their timezone is set to automatic and
- * is different from current timezone
- */
-function updateTimezone() {
-    setPersonalDetails({timezone: DateUtils.getCurrentTimezone()});
-}
-
 function updateProfile(firstName, lastName, pronouns, timezone) {
     API.write('UpdateProfile', {
         firstName,
@@ -400,7 +391,6 @@ export {
     getFromReportParticipants,
     getDisplayName,
     setPersonalDetails,
-    updateTimezone,
     updateAvatar,
     deleteAvatar,
     openIOUModalPage,