Reverting change to date formatter.

ScoutHarris · ScoutHarris · commit 0ee48df7af97 · 2019-07-17T20:20:30.000-06:00
diff --git a/WordPressKit/StatsServiceRemoteV2.swift b/WordPressKit/StatsServiceRemoteV2.swift
@@ -15,7 +15,7 @@ public class StatsServiceRemoteV2: ServiceRemoteWordPressComREST {
 
     private lazy var periodDataQueryDateFormatter: DateFormatter = {
         let df = DateFormatter()
-        df.timeZone = siteTimezone
+        df.locale = Locale(identifier: "en_US_POSIX")
         df.dateFormat = "yyyy-MM-dd"
         return df
     }()
