Remove certain non-standard properties from Intl

test/intl/date-format/parse-mdy.js

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+// Flags: --intl-extra
+
 // Testing v8Parse method for date only.
 
 function checkDate(date) {
   assertEquals(1974, date.getUTCFullYear());
   assertEquals(1, date.getUTCMonth());
   assertEquals(4, date.getUTCDate());
 }
 
 var dtf = new Intl.DateTimeFormat(['en'], {timeZone: 'America/Los_Angeles'});
 
 // Make sure we have pattern we expect (may change in the future).
 assertEquals('M/d/y', dtf.resolved.pattern);
 
 checkDate(dtf.v8Parse('2/4/74'));
 checkDate(dtf.v8Parse('02/04/74'));
 checkDate(dtf.v8Parse('2/04/74'));
 checkDate(dtf.v8Parse('02/4/74'));
 checkDate(dtf.v8Parse('2/4/1974'));
 checkDate(dtf.v8Parse('02/4/1974'));
 checkDate(dtf.v8Parse('2/04/1974'));
 checkDate(dtf.v8Parse('02/04/1974'));
 
 // Month is numeric, so it fails on "Feb".
 assertEquals(undefined, dtf.v8Parse('Feb 4th 1974'));